Population
7,123 residents
Census ACS 2023 - Illinois
City profile · Illinois · Census ACS 2023
Population, income, housing, safety, climate and schools for Marengo - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.
Marengo - the verdict
Out of every US city with 1,000+ residents, Marengo places in the 53rd percentile for household income and the 76th percentile for safety. Source: Census ACS + FBI UCR.
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.
Illinois's Marengo is a small town, with 7,123 residents per the latest Census Bureau ACS figures. Median household income here is $72,586 per year, above the median for U.S. cities on this measure, with a poverty rate of 17.2%. Typical homes in Marengo are valued around $206,100, and the median resident age is 33.3 years. Educational attainment runs 16.5% of adults with a bachelor's degree or higher. Separately, 60.6% of working-age residents are in the labor force.
Housing supply pressure shows in Census Building Permit Survey data: 36 residential units were authorized in 2024 (Building Boom), up 620% from five years earlier. Marengo reports a comparatively low crime rate: FBI UCR reporting places total crime at 708.1 incidents per 100,000 residents, below the national average (voluntary agency reporting, reflects reporting activity, not a definitive danger score). The annual average temperature per NOAA climate normals runs 48.2°F with 37.6 inches of precipitation per year and 30.8 inches of snowfall.
Illinois tracks close to the national cost-of-living baseline: on BEA's 100-equals-national-average cost index, Illinois scores 100.0 (Near Average), per the 2024 Regional Price Parities release. HUD Fair Market Rent for a typical two-bedroom in this state is $1,781 per month. Statewide, average monthly utility bills in Illinois run around $240, per EIA 2023 residential energy data. Natural-hazard exposure scores 90.8 out of 100 on FEMA's National Risk Index (Very High).
Population
7,123 residents
Census ACS 2023 - Illinois
Median Household Income
$72,586 /yr
Poverty 17.2%
Cost of Living Index (state)
100.0 (US=100)
Near Average - BEA RPP 2024, Illinois average
Here's how Marengo stacks up against the full field of US cities (population 1,000+), computed live from Census and FBI data.
"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.
Zoom in to just Illinois and the picture shifts: Marengo ranks #167 of 455 Illinois cities by lowest crime rate, a different read than the national percentile above.
For each metric we count every US city with population 1,000+ and a non-null value, then compute what share of them fall below Marengo's value: round(cities-below ÷ total × 100). Safety is inverted (percentile = share of cities with a higher crime rate) so a higher number always means safer. The in-state rank narrows that same crime-rate comparison to only the cities PlainCities tracks in Illinois, breaking ties alphabetically. See the methodology page for the full source-to-figure lineage.
53rd percentile nationally for median household income · 76th percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.
Income, affordability, and safety percentile
How Marengo's home value compares nationally
Median home value vs. every US city (population 1,000+)
$206,100 Among the most affordable more affordable than 56% of 15,600 US cities
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
Census ACS S1501, educational attainment
Census ACS S1701, poverty status
Census ACS S2301, share of working-age residents in the labor force
Reflects incidents reported to the FBI's Uniform Crime Reporting program — agency participation is voluntary and reporting completeness varies by jurisdiction and year, so this reflects reporting activity, not a definitive danger score. Not adjusted for tourism, commuter, or daytime population.
Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025
Census Bureau Building Permits Survey (BPS) - annual residential permits authorized
| Year | Total |
|---|---|
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 24 |
| 2022 | 29 |
| 2023 | 35 |
| 2024 | 36 |
Permit volume increased 620% from 2019 to 2024.
How workers travel to work, Census ACS 2023
Based on 3,352 workers 16 and over.
State-average estimates for Illinois - EIA 2023 residential energy data
Estimates reflect Illinois state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.
Cost of living is a Illinois state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county Marengo sits in
Population-matched peers from other states, closest to Marengo's 7,123 residents (Census ACS 5-Year 2023).
Median-household-income-matched peers from other states, closest to Marengo's $72,586 (Census ACS 5-Year 2023, table B19013).
City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.
Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).
| City | Population | Median Household Income |
|---|---|---|
| Marengo (this city) | 7,123 | $72,586 |
| Sandwich | 7,121 | $77,027 |
| University Park | 7,109 | $65,580 |
| West Frankfort | 7,156 | $48,143 |
Marengo, IL has a population of 7,123 according to U.S. Census Bureau ACS 2023 estimates.
In Marengo, the typical household earns $72,586 per year, based on Census ACS 2023 data.
BEA does not publish a city-level cost-of-living figure for Marengo; the closest available measure is the Illinois state average, a cost of living index of 100.0 (U.S. average = 100), rated "Near Average" based on BEA Regional Price Parities 2024 data. Costs within Illinois vary by metro area.
Marengo has a total crime rate of 708.1 per 100,000 residents, which is below the national average. This reflects incidents reported to the FBI UCR program, not a definitive safety score -- agency reporting is voluntary and completeness varies by jurisdiction.
Marengo's median home value sits at $206,100, according to Census ACS 2023 estimates.
The average annual temperature in Marengo runs 48.2°F, 37.6 inches of precipitation, and 30.8 inches of snowfall per year. Source: NOAA Climate Normals.
Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NOAA Climate Normals, NCES CCD, 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.
Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.
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.