City profile · Illinois · Census ACS 2023

Spring Bay, IL

Spring Bay's Census ACS profile: residents, income, housing, and the joined public-record layers available for this place.

519
Residents
$61,111
Median income
$134,900
Median home
$1,063
Median rent (state)
View my watchlist

Compare or rank this city

Side-by-side metrics and state or size-class ranks use the same Census and FBI fields shown on this profile. Results stay in the URL so you can bookmark or share them.

Compare with another city

Starting with Spring Bay, IL - add up to three more cities on the compare page.

See how it ranks

State rank, size-class rank, and four peer cities for Spring Bay.

Place dossier plate

Sheet IL-SPRING-BAY-IL · Spring Bay, IL 519 pop · income 37th pct

POP-VILLAGE · INC-MID · COL-PAR · SAFE-UNK · RANK-LOWER · PHOTO-FINISH · HOME-LOW · BOOK-UNK

  • POP-VILLAGE 519
  • INC-MID $61,111
  • COL-PAR 100.0
  • SAFE-UNK Safety pending
  • RANK-LOWER 37th
  • PHOTO-FINISH ≈ Pine Island Cen…
  • HOME-LOW $134,900
  • BOOK-UNK Tracts pending

Nearest income peer: Pine Island Center, FL (+ $0 income $)

Instrument codes from this place’s ACS population and household income, BEA state COL, FBI safety, national income percentile, photo-finish peer city, home-value band, and matched Census-tract book - not a moving recommendation.

Income neighbourhood around Spring Bay

Lowest/highest poles plus peers nearest Spring Bay on median household income. Full ladder: /browse and /rankings.

median HH income

What this shows Neighbourhood peers only - not a full nationwide city board. Open a near peer when the gap is small; open the poles when the spread is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-08

Compare beyond this state

Nationwide peers by population, income

Out-of-state nearest neighbors for Spring Bay on ACS population and median household income . Link sets are deduped so each column is a distinct comparison path, not a forecast that peers share a labor market or climate.

Similar population

Nearest out-of-state cities by ACS population. This city: 519.

4 peers

Similar household income

Nearest out-of-state cities by ACS median household income. This city: $61,111. Population peers are excluded.

4 peers

Spring Bay - the verdict

Out of every US city with 1,000+ residents, Spring Bay places in the 37th percentile for household income. Source: Census ACS.

37th
percentile, household income
22nd
percentile, home value
18th
percentile, median rent
📝 How we sourced this

Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.

Data Snapshot: Spring Bay, IL

Spring Bay is a small town in Illinois, home to 519 residents per U.S. Census Bureau ACS 2023 estimates. Spring Bay households earn a median of $61,111 annually, below the median for U.S. cities on this measure, with a poverty rate of 19.6%. Spring Bay's housing stock carries a median value of $134,900, and the median resident age is 42.9 years. Educational attainment runs 11.5% of adults with a bachelor's degree or higher. Separately, 53.4% of working-age residents are in the labor force.

The Census Building Permit Survey recorded 4 residential units authorized here in 2024 (Low Activity).

Illinois tracks close to the national cost-of-living baseline: BEA Regional Price Parities 2024 puts Illinois at 100.0 on a 100-equals-national-average scale (Near Average). HUD Fair Market Rent for a typical two-bedroom in this state is $1,063 per month. EIA 2023 residential energy data puts Illinois's average monthly utility costs around $240 (state average). Natural-hazard exposure scores 54.5 out of 100 on FEMA's National Risk Index (Low).

A decision-led reading path

Useful questions to ask of Spring Bay's data

How this reading path is ordered

This is not a composite city score. It is a city-specific route through the available public records, ordered for this profile so the page starts with questions the joined data can actually answer. The route here runs from work and mobility to housing and income to comparison shortlist to population change; another city can have a different sequence or fewer supported layers because the source joins are not uniform.

For Spring Bay, city-specific coverage includes local building permits, annual population history, commute-mode shares. No matched row is reported here for matched public-school count, FBI reported-crime rates, within-city Census tract profiles; the page leaves those layers out instead of substituting a statewide or national value.

1. Work and mobility

What does the journey to work look like in Spring Bay?

Mode share answers how workers usually travel; it does not measure congestion, reliability, distance to a particular job, or the quality of transit service. No single mode completely explains the work trip here. The mix is more useful than a one-number commute grade, especially when comparing places where transit, walking, and remote work divide the non-driving share differently.

Driving alone is the largest reported mode at 81.7%. A reliable mean commute time is not available for this row, so the mode shares carry the comparison.

Compare commute patterns →

Question 2

How far does income reach against housing in Spring Bay?

The home-value-to-income reference is relatively compact: the ACS median home value is 2.2 times median household income. The ACS poverty estimate is 19.6%, which keeps the citywide median from describing every household.

This is a citywide price-to-income reference, not a mortgage-affordability test; it does not include interest rates, taxes, insurance, household size, or an individual buyer's down payment. The ratio makes housing the clearest place to start this profile, but a low multiple can coexist with slow demand, older stock, or household-level hardship. Compare the home-value distribution and same-state peer table before treating it as an advantage.

Compare the housing trade-off →

Question 3

Which cities make useful reference points for Spring Bay?

Within Illinois, the closest population matches are Altona (519 residents, $67,125 income); Keithsburg (520 residents, $46,875 income); Mark (522 residents, $79,911 income). Outside the state, the closest population matches in this dataset are Hackneyville, AL (519 residents); Plainview, CA (519 residents); Fairfield, ID (519 residents). A third, income-matched reference set of 6 out-of-state cities sits in the income neighbourhood chart near the Place Dossier plate. These are mechanical peer sets, not claims that the places share a labor market, climate, culture, or metro context.

Use the in-state set to hold state policy and broad price conditions more nearly constant. Use the nationwide size set to ask whether cities with a similar resident count produce different housing, income, or commute outcomes. The income set is a third lens, deliberately separate from population matching.

Open a side-by-side comparison →

4. Population change

Is Spring Bay growing, shrinking, or holding steady?

Recent estimates point upward. Growth can increase housing demand and service needs, but the permit record must move in the same direction before calling it a supply response; the two series measure different things.

Census PEP estimates show the population grew by +23 residents from 2020 to 2025, a +4.9% change. Separately, Census BPS recorded 4 housing units authorized in 2024. PEP and ACS are different Census series, so the trend is kept separate from the headline ACS population.

See the national growth ranking →

Population

519 residents

Micro place (under 10k)

Median Household Income

$61,111 /yr

Below median income · poverty 19.6% (High poverty)

Cost of Living Index (state)

100.0 (US=100)

Above-average cost · BEA RPP 2024, Illinois average

City profile score · Spring Bay, IL

27/100

4 published dimensions · ACS/FBI 2023

Comparative score against U.S. cities with population of 1,000 or more on Census ACS medians (income, poverty, bachelor's share, cost of living) and FBI UCR violent-crime rates when published. Higher means a stronger standing on those published figures, not a livability rating, not a recommendation to move, buy, or pick a "best" city. Missing inputs drop out and redistribute weight. How it is calculated.

Cost of living D
100.0 index

BEA state Regional Price Parities index (100 ≈ national average); lower is stronger on this axis. Same value for every city in the state.

Household income F
$61,111

Median household income vs U.S. cities (pop ≥1,000); ACS.

Poverty rate F
19.6%

Share of residents below the poverty line; lower scores better on this axis.

Bachelor's+ share F
11.5%

Adults with a bachelor's degree or higher; ACS.

Violent crime N/A
N/A

No FBI UCR violent-crime rate for this place (coverage is incomplete).

Spring Bay profile (scored ACS/FBI dimensions) 4-axis radar comparing 1 series across Cost of living, Household income, Poverty rate, Bachelor's+ share. Cost of livingHousehold incomePoverty rateBachelor's+ share 27 F
Spring Bay profile (scored ACS/FBI dimensions)
Read the chart values
  • Cost of living: 40/100 (D) · 100.0 index
  • Household income: 36/100 (F) · $61,111
  • Poverty rate: 14/100 (F) · 19.6%
  • Bachelor's+ share: 11/100 (F) · 11.5%

How does Spring Bay compare to other US cities?

Where Spring Bay sits among all US cities (population 1,000+) on each measure, computed live from Census and FBI data.

Household income 37% higher than other cities
Home value 22% pricier than other cities
Median rent 18% pricier than other cities

"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.

How we calculate these percentiles & ranks

Each percentile compares Spring Bay against every qualifying US city; each in-state rank narrows that to Illinois only. Full formula and direction notes: methodology.

Illinois-relative analysis

Median Gross Rent places Spring Bay near the bottom of Illinois's cities

Among the 1,336 Illinois cities PlainCities tracks with reported median gross rent data, Spring Bay ranks #1 - the 0th percentile within the state. This is a different, narrower cut than the nationwide percentiles above: it compares Spring Bay only against its own state's cities, not the full US field.

Median Household Income
#809 of 1,311
38th percentile in Illinois
Median Gross Rent
#1 of 1,336
0th percentile in Illinois
Median Home Value
#568 of 1,315
57th percentile in Illinois
Poverty Rate
#123 of 1,335
91st percentile in Illinois
Bachelor's Degree or Higher
#1,017 of 1,336
24th percentile in Illinois
How in-state ranks are ordered

Ranked by raw value (highest first); a higher rank is not automatically "better" for every measure, see each metric's own context above. This is a comparison within Illinois only, not a livability score. See the methodology for the source and calculation.

37thIncome percentile
Gauge source note

37th percentile nationally for median household income. Source: Census ACS 2023 / FBI UCR 2023.

How Spring Bay's home value compares nationally

Median home value vs. every US city (population 1,000+)

$134,900 Among the most affordable more affordable than 78% of 15,600 US cities

Show national distribution $0–$25,000: 5 US cities (0%). Below this entry. $25,000–$50,000: 54 US cities (0%). Below this entry. $50,000–$75,000: 352 US cities (2%). Below this entry. $75,000–$100,000: 1,086 US cities (7%). Below this entry. $100,000–$125,000: 1,516 US cities (10%). Below this entry. $125,000–$150,000: 1,170 US cities (8%). This entry sits in this band. $150,000–$175,000: 1,278 US cities (8%). Above this entry. $175,000–$200,000: 1,229 US cities (8%). Above this entry. $200,000–$225,000: 1,035 US cities (7%). Above this entry. $225,000–$250,000: 976 US cities (6%). Above this entry. $250,000–$275,000: 754 US cities (5%). Above this entry. $275,000–$300,000: 712 US cities (5%). Above this entry. $300,000–$325,000: 521 US cities (3%). Above this entry. $325,000–$350,000: 526 US cities (3%). Above this entry. $350,000–$375,000: 465 US cities (3%). Above this entry. $375,000–$400,000: 393 US cities (3%). Above this entry. $400,000–$425,000: 317 US cities (2%). Above this entry. $425,000–$450,000: 300 US cities (2%). Above this entry. $450,000–$475,000: 307 US cities (2%). Above this entry. $475,000–$500,000: 250 US cities (2%). Above this entry. $500,000–$525,000: 160 US cities (1%). Above this entry. $525,000–$550,000: 156 US cities (1%). Above this entry. $550,000–$575,000: 172 US cities (1%). Above this entry. $575,000–$600,000: 172 US cities (1%). Above this entry. $600,000–$625,000: 163 US cities (1%). Above this entry. $625,000–$650,000: 167 US cities (1%). Above this entry. $650,000–$675,000: 135 US cities (1%). Above this entry. $675,000–$700,000: 101 US cities (1%). Above this entry. $700,000–$725,000: 95 US cities (1%). Above this entry. $725,000–$750,000: 71 US cities (0%). Above this entry. $750,000–$775,000: 65 US cities (0%). Above this entry. $775,000–$800,000: 70 US cities (0%). Above this entry. $800,000–$825,000: 57 US cities (0%). Above this entry. $825,000–$850,000: 67 US cities (0%). Above this entry. $850,000–$875,000: 60 US cities (0%). Above this entry. $875,000–$900,000: 58 US cities (0%). Above this entry. $900,000–$925,000: 47 US cities (0%). Above this entry. $925,000–$950,000: 37 US cities (0%). Above this entry. $950,000–$975,000: 31 US cities (0%). Above this entry. $975,000–$1,000,000: 470 US cities (3%). Above this entry. $1,000,000–$1,025,000: 0 US cities (0%). Above this entry. Spring Bay $0 $1,025,000 every US city, bucketed by value

Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau ACS 5-Year Estimates · 2023

Spring Bay's home-value-to-income ratio: 2.2×

ACS median home value divided by median household income.

Band
affordable
< 3.0×
National rank
#2,497 of 15,516
More affordable than 84% of tracked cities (pop. 1,000+)
Size class
#2,341 of 11,323
Micro cities (under 10,000)

At 2.2×, Spring Bay sits in the affordable band: national rank #2,497 of 15,516 and #2,341 of 11,323micro cities (under 10,000). The multiple is comparatively compact among tracked cities, but a low ratio can still coexist with slow demand or household-level hardship.

How this ratio is calculated

Ratio = Census ACS 2023 median home value ÷ median household income for cities with both fields and population ≥ 1,000. Rank 1 = lowest ratio (most compact). Bands match the fleet affordability thresholds used on guides (<3.0 / 3.0–5.0 / >5.0). This is not a mortgage payment estimate and does not include rates, taxes, insurance, or down payment.

Income distribution context

$61,111 Spring Bay, IL median household income (Census ACS)

Show U.S. national quintile / Lorenz context Household income distribution - Spring Bay, IL Spring Bay, IL's median household income ($61,111) against the U.S. national quintile-share pattern. The Lorenz curve and quintile bars are national context, not Spring Bay, IL-specific shares. $ Household Income Distribution Spring Bay, IL median $61,111/yr, vs. U.S. national quintile pattern QUINTILE SHARE OF AGGREGATE INCOME Lowest 20% 3.4% Second 20% 9.2% Middle 20% 15.1% Fourth 20% 23.2% Top 20% 49.1% LORENZ CURVE cumulative income vs. population 100% 0% 100% pop. 0%
Spring Bay, IL median household income (Census ACS 5-year) with U.S. national quintile shares for context. Diagonal = equality; the curve is national, not computed for Spring Bay, IL.

Key socioeconomic indicators

Bachelor's degree or higher (adults 25+) 11.5%

Census ACS S1501, educational attainment

Poverty rate (households below FPL) 19.6%

Census ACS S1701, poverty status

Labor force participation (adults 16+) 53.4%

Census ACS S2301, share of working-age residents in the labor force

Population
519
Median Income
$61,111
Median Home Value
$134,900
Median Age
42.9
Poverty Rate
19.6%
Labor force participation
53.4%
Bachelor's Degree+
11.5%

Population Change

PEP vintage

Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025

See the fastest-growing cities →
460 residents470 residents480 residents490 residents500 residents 202020212022202320242025 466 residents 489 residents ▲ +4.9%
Spring Bay's Census PEP population estimates, 2020–2025.
Read the chart as text
Period Population
2020 466 residents
2021 467 residents
2022 471 residents
2023 478 residents
2024 482 residents
2025 489 residents

Housing Supply

BPS source

Census Bureau Building Permits Survey (BPS) - annual residential permits authorized

🏗️ Low Activity
Total Permits (2024)
4
housing units authorized
Single-Family
4
detached homes
Multifamily
0
apartments & condos
Supply Intensity
7.7
permits per 1,000 residents

5-Year Permit Trend (2019–2024)

Year Total
2019 0
2020 2
2021 3
2022 3
2023 3
2024 4

Commute Patterns

Commute source

How workers travel to work, Census ACS 2023

Drive Alone
81.7%
Carpool
6.6%
Public Transit
0.0%
Walk
0.0%
Work from Home
11.8%

Based on 229 workers 16 and over.

Monthly Utility Costs

Illinois statewide monthly utility average (EIA 2023): $240

EIA 2023 residential energy data puts average monthly utilities across Illinois at $240 (electricity about $100 , water and sewer about $50 ).

These are Illinois statewide averages, not a meter reading for Spring Bay. Actual bills vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.

Living Costs & Risk

Illinois's BEA cost-of-living index is 100.0 (Near Average; US average = 100, RPP 2024). HUD Fair Market Rent for a typical two-bedroom in the county around Spring Bay is $1,063/mo. FEMA's National Risk Index, averaged to Illinois statewide on PlainCities, rates natural-hazard exposure at 54.5 / 100 (Low).

Cost/risk geography note

Cost of living is a Illinois statewide BEA average; rent is a county-level HUD Fair Market Rent for the county Spring Bay sits in; the FEMA hazard score shown here is a statewide average of county NRI inputs, not a parcel-level reading.

How Spring Bay compares to similar-size Illinois cities

Same-state peer method

Closest same-state population matches, not geographic neighbors. Population + median household income come from Census Bureau ACS 5-year B01001 and B19013.

City Population Median Household Income
Spring Bay (this city) 519 $61,111
Altona 519 $67,125
Keithsburg 520 $46,875
Mark 522 $79,911
Census BPS 2024
Primary sources on this page

Source: U.S. Census Bureau ACS 5-Year 2023, Census BPS 2024, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.

Read our methodology - how this data is sourced, computed, and verified.

Citation & verification links Data sourced from the U.S. Census Bureau. See our methodology for details. Retrieved and formatted by PlainCities

Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES. Joins use OMB Bulletin 23-01 / FIPS keys.

Browse all city profiles → · Explore city rankings →

Verify with HUD →

Verify with FBI →

Verify with NOAA →

Verify with U.S. Census Bureau →

Verify with EPA →

Verify with FEMA →

Verify with BEA →

Verify with EIA →

Verify with NCES →

Estimate caveats

ACS and UCR figures are citywide estimates with vintage lags; they do not replace a local visit, school visit, or insurance quote.

Editorial standards, provenance, and how to cite this page

Every figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.

Share or download this profile