Census tract · Polk County
Census Tract 117.31, Polk County, Florida
Census Tract 117.31, GEOID 12105011731, in Polk County, Florida, mostly within Crystal Lake (84% of its census blocks). 5,049 residents in the ACS 2020-2024 5-year estimates (±760); the 2020 Census counted 5,326.
Residents, 2020-2024
5,049
±760 (90% margin)
2020 Census count: 5,326
Median household income
$49,833
±$9,842 (90% margin)
Polk County: $65,978
Median home value
$202,900
±$24,374 (90% margin)
Polk County: $266,500
Median gross rent
$1,264
±$123 (90% margin)
Polk County: $1,363
Where is Census Tract 117.31?
Census Tract 117.31 is one of 174 census tracts in Polk County, Florida. It covers 1.25 square miles of land, 4,271 residents per square mile in 2020. Its GEOID, 12105011731, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Crystal Lake | 84% |
| Lakeland | 16% |
4 census tracts border Census Tract 117.31: Tract 103 ($72,668), Tract 115.01 ($40,384), Tract 117.04 ($37,702) and Tract 117.32 ($51,367). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 117.31?
The 2020-2024 American Community Survey puts Census Tract 117.31's population at 5,049 (±760) in 1,270 households; the 2020 Census counted 5,326 residents and 1,664 housing units.
| Measure | Tract 117.31 | Crystal Lake |
|---|---|---|
| Total population | 5,049 ±760 | 5,451 |
| Households | 1,270 ±184 | 2,074 |
| Average household size | 2.48 ±0.33 | 2.63 |
| Housing units | 1,597 ±140 | 2,426 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 117.31?
The median resident of Census Tract 117.31 is 22.5 years old; 13.3% are under 18 and 9.8% are 65 or older. The largest group is non-Hispanic white residents at 60.9%, then Hispanic or Latino residents (of any race) at 18.2%. 9.8% of residents were born outside the United States.
| Measure | Tract 117.31 | Crystal Lake |
|---|---|---|
| Median age | 22.5 ±1.2 | 39.4 |
| Under 18 years | 13.3% ±4.5 pts | 25.2% |
| 65 years and over | 9.8% ±2.6 pts | 11.6% |
| Hispanic or Latino (any race) | 18.2% ±9.7 pts | 32.9% |
| White alone, not Hispanic | 60.9% ±10.7 pts | 42.6% |
| Black or African American alone, not Hispanic | 13.2% ±4.7 pts | 19.3% |
| Asian alone, not Hispanic | 1.3% ±1.9 pts | 1.9% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.0 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.4% ±0.6 pts | 0.1% |
| Two or more races, not Hispanic | 4.0% ±2.5 pts | 2.5% |
| Some other race alone, not Hispanic | 2.0% ±2.2 pts | 0.7% |
| Born outside the United States | 9.8% ±5.7 pts | 14.5% |
| Speak a language other than English at home (age 5+) | 18.6% ±9.7 pts | 25.5% |
| Civilian veterans (age 18+) | 3.5% ±1.9 pts | 4.7% |
| With a disability | 11.9% ±3.3 pts | 14.9% |
| No health insurance coverage | 13.5% ±4.9 pts | 18.3% |
| High school graduate or higher (age 25+) | 76.9% ±9.8 pts | 71.9% |
| Bachelor's degree or higher (age 25+) | 14.2% ±4.4 pts | 10.1% |
| Graduate or professional degree (age 25+) | 4.3% ±3.6 pts | 3.7% |
| Lived in the same house a year earlier | 71.5% ±8.2 pts | 89.1% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Census Tract 117.31 earn?
Half of the 1,270 households in Census Tract 117.31 earn less than $49,833 a year (±$9,842), against $65,978 across Polk County: 135th highest of the county's 171 tracts with a reliable estimate. 27.4% of residents live below the poverty line.
| Measure | Tract 117.31 | Crystal Lake |
|---|---|---|
| Median household income | $49,833 ±$9,842 | $49,424 |
| Mean household income | $59,669 ±$8,098 | $63,755 |
| Per capita income | $16,833 ±$2,068 | $25,506 |
| People below the poverty line | 27.4% ±11.3 pts | 26.3% |
| Children under 18 below the poverty line | 48.5% ±23.0 pts | 38.0% |
| Households receiving SNAP | 25.7% ±8.7 pts | 25.3% |
| Households with a computer | 98.0% ±2.0 pts | 95.7% |
| Households with a broadband subscription | 89.9% ±7.0 pts | 84.7% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Census Tract 117.31?
Owners occupy 52.9% of Census Tract 117.31's occupied homes and renters 47.1%. The median owner-occupied home is valued at $202,900 by its owner (±$24,374). The median renter pays $1,264 a month including utilities, and 42.7% of renters pay 35% or more of their income on rent.
| Measure | Tract 117.31 | Crystal Lake |
|---|---|---|
| Median home value (owner-occupied) | $202,900 ±$24,374 | $205,600 |
| Median gross rent | $1,264 ±$123 | $1,181 |
| Renters paying 35% or more of income on rent | 42.7% ±14.8 pts | 40.7% |
| Median monthly owner costs, with a mortgage | $1,162 ±$86 | $1,192 |
| Owner-occupied homes | 52.9% ±10.1 pts | 46.2% |
| Renter-occupied homes | 47.1% ±10.1 pts | 53.8% |
| Housing units | 1,597 ±140 | 2,426 |
| Single-family detached homes | 58.3% ±8.6 pts | 49.2% |
| Mobile homes | 18.8% ±7.8 pts | 22.3% |
| Built 2020 or later | 0.0% ±3.2 pts | 0.3% |
| Built 2010 to 2019 | 0.8% ±1.3 pts | 0.5% |
| Built 1939 or earlier | 2.4% ±2.3 pts | 1.6% |
| Households with no vehicle | 4.8% ±3.8 pts | 9.2% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Census Tract 117.31 get to work?
54.6% of Census Tract 117.31's workers drive alone and 9.8% work from home. The average trip to work takes 24.5 minutes.
| Measure | Tract 117.31 | Crystal Lake |
|---|---|---|
| In the labor force (age 16+) | 55.9% ±5.8 pts | 60.9% |
| Unemployment rate | 5.2% ±3.9 pts | 4.1% |
| Drove alone to work | 54.6% ±9.8 pts | 73.9% |
| Carpooled | 11.2% ±5.7 pts | 10.2% |
| Public transportation | 0.0% ±2.2 pts | 0.5% |
| Walked | 11.9% ±5.9 pts | 2.4% |
| Worked from home | 9.8% ±3.6 pts | 2.2% |
| Mean travel time to work | 24.5 min ±4.2 | 29.2 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
How does Census Tract 117.31 compare with the other tracts in Polk County?
Among Polk County's tracts with a reliable estimate, Census Tract 117.31 ranks as shown below (1 = highest).
| Measure | In Polk County |
|---|---|
| Population | 53rd of 173 |
| Residents per square mile | 6th of 174 |
| Median household income | 135th of 171 |
| Per capita income | 169th of 173 |
| Median home value | 118th of 163 |
| Median gross rent | 89th of 163 |
| Poverty rate | 22nd of 128 |
| Bachelor's degree or higher | 122nd of 164 |
| Median age | 172nd of 173 |
| Owner-occupied share | 141st of 172 |
The tracts next to it on Polk County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 127.02 | 132nd | $50,061±$13,099 · within the margin of this tract |
| Tract 137.02 | 133rd | $49,942±$5,407 · within the margin of this tract |
| Tract 148.02 | 134th | $49,889±$5,469 · within the margin of this tract |
| Tract 117.31 | 135th | $49,833±$9,842 |
| Tract 126.02 | 136th | $49,500±$15,315 · within the margin of this tract |
| Tract 117.22 | 137th | $48,795±$10,158 · within the margin of this tract |
| Tract 119.01 | 138th | $47,992±$8,643 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 117.31?
1 of the 18 figures for Census Tract 117.31 on this page carries a coefficient of variation over 40% and is marked with a ring: they come from a small sample, so read them as rough.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections