Census tract · Polk County
Census Tract 115, Polk County, Iowa
Census Tract 115, GEOID 19153011500, in Polk County, Iowa, partly within Polk City, Granger and Sheldahl. 8,161 residents in the ACS 2020-2024 5-year estimates (±499); the 2020 Census counted 7,785.
Residents, 2020-2024
8,161
±499 (90% margin)
2020 Census count: 7,785
Median household income
$150,156
±$22,054 (90% margin)
Polk County: $83,576
Median home value
$416,700
±$22,692 (90% margin)
Polk County: $262,100
Median gross rent
$793
±$180 (90% margin)
Polk County: $1,149
Where is Census Tract 115?
Census Tract 115 is one of 112 census tracts in Polk County, Iowa. It covers 40.73 square miles of land, 191 residents per square mile in 2020. Its GEOID, 19153011500, names it uniquely (how tract numbers and GEOIDs work).
8 census tracts border Census Tract 115: Tract 205 in Boone County ($100,634), Tract 501 in Dallas County ($149,056), Tract 101.01 ($136,923), Tract 102.15 ($156,660), Tract 113.01 ($137,098), Tract 113.02 ($120,274), Tract 114.05 ($198,056) and Tract 114.06 ($93,417). 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 115?
The 2020-2024 American Community Survey puts Census Tract 115's population at 8,161 (±499) in 3,008 households; the 2020 Census counted 7,785 residents and 2,817 housing units.
| Measure | Tract 115 | Polk County |
|---|---|---|
| Total population | 8,161 ±499 | 503,175 |
| Households | 3,008 ±225 | 205,358 |
| Average household size | 2.70 ±0.11 | 2.41 |
| Housing units | 3,065 ±231 | 218,486 |
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 115?
The median resident of Census Tract 115 is 39.5 years old; 27.6% are under 18 and 17.7% are 65 or older. The largest group is non-Hispanic white residents at 95.5%, then Hispanic or Latino residents (of any race) at 3.0%.
| Measure | Tract 115 | Polk County |
|---|---|---|
| Median age | 39.5 ±3.9 | 36.2 |
| Under 18 years | 27.6% ±2.7 pts | 24.4% |
| 65 years and over | 17.7% ±3.5 pts | 14.0% |
| Hispanic or Latino (any race) | 3.0% ±2.5 pts | 10.4% |
| White alone, not Hispanic | 95.5% ±2.6 pts | 73.2% |
| Black or African American alone, not Hispanic | 0.1% ±0.2 pts | 7.3% |
| Asian alone, not Hispanic | 0.0% ±0.3 pts | 4.9% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.3 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% |
| Two or more races, not Hispanic | 1.3% ±1.0 pts | 3.8% |
| Some other race alone, not Hispanic | 0.0% ±0.3 pts | 0.3% |
| Born outside the United States | 0.5% ±0.6 pts | 10.1% |
| Speak a language other than English at home (age 5+) | 1.7% ±1.1 pts | 14.7% |
| Civilian veterans (age 18+) | 5.1% ±2.4 pts | 5.6% |
| With a disability | 7.2% ±2.0 pts | 11.4% |
| No health insurance coverage | 3.2% ±1.9 pts | 5.3% |
| High school graduate or higher (age 25+) | 98.2% ±1.8 pts | 92.5% |
| Bachelor's degree or higher (age 25+) | 46.1% ±6.8 pts | 40.3% |
| Graduate or professional degree (age 25+) | 16.8% ±4.4 pts | 13.1% |
| Lived in the same house a year earlier | 94.5% ±2.5 pts | 85.7% |
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 115 earn?
Half of the 3,008 households in Census Tract 115 earn less than $150,156 a year (±$22,054), against $83,576 across Polk County: 8th highest of the county's 109 tracts with a reliable estimate.
| Measure | Tract 115 | Polk County |
|---|---|---|
| Median household income | $150,156 ±$22,054 | $83,576 |
| Mean household income | $152,423 ±$14,454 | $109,398 |
| Per capita income | $57,373 ±$6,503 | $45,622 |
| People below the poverty line | 5.0% ±3.6 pts | 10.3% |
| Children under 18 below the poverty line | 5.2% ±6.2 pts | 14.0% |
| Households receiving SNAP | 1.1% ±1.2 pts | 9.8% |
| Households with a computer | 100.0% ±0.8 pts | 96.9% |
| Households with a broadband subscription | 92.7% ±3.9 pts | 91.9% |
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 115?
Owners occupy 89.4% of Census Tract 115's occupied homes and renters 10.6%. The median owner-occupied home is valued at $416,700 by its owner (±$22,692). The median renter pays $793 a month including utilities.
| Measure | Tract 115 | Polk County |
|---|---|---|
| Median home value (owner-occupied) | $416,700 ±$22,692 | $262,100 |
| Median gross rent | $793 ±$180 | $1,149 |
| Renters paying 35% or more of income on rent | 30.6% ±29.1 pts | 35.5% |
| Median monthly owner costs, with a mortgage | $2,528 ±$256 | $1,741 |
| Owner-occupied homes | 89.4% ±5.7 pts | 67.4% |
| Renter-occupied homes | 10.6% ±5.7 pts | 32.6% |
| Housing units | 3,065 ±231 | 218,486 |
| Single-family detached homes | 85.0% ±4.5 pts | 62.7% |
| Mobile homes | 0.0% ±0.8 pts | 2.0% |
| Built 2020 or later | 10.3% ±4.3 pts | 3.0% |
| Built 2010 to 2019 | 24.1% ±5.6 pts | 13.9% |
| Built 1939 or earlier | 5.4% ±3.2 pts | 14.2% |
| Households with no vehicle | 3.4% ±3.7 pts | 5.8% |
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 115 get to work?
74.5% of Census Tract 115's workers drive alone and 22.7% work from home. The average trip to work takes 25.8 minutes.
| Measure | Tract 115 | Polk County |
|---|---|---|
| In the labor force (age 16+) | 69.3% ±5.9 pts | 71.4% |
| Unemployment rate | 2.5% ±2.1 pts | 4.4% |
| Drove alone to work | 74.5% ±5.7 pts | 72.4% |
| Carpooled | 2.4% ±2.0 pts | 8.4% |
| Public transportation | 0.0% ±0.6 pts | 0.5% |
| Walked | 0.3% ±0.5 pts | 1.4% |
| Worked from home | 22.7% ±5.5 pts | 15.7% |
| Mean travel time to work | 25.8 min ±2.9 | 20.0 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 115 compare with the other tracts in Polk County?
Among Polk County's tracts with a reliable estimate, Census Tract 115 ranks as shown below (1 = highest).
| Measure | In Polk County |
|---|---|
| Population | 6th of 111 |
| Residents per square mile | 109th of 112 |
| Median household income | 8th of 109 |
| Per capita income | 21st of 111 |
| Median home value | 7th of 109 |
| Median gross rent | 104th of 107 |
| Bachelor's degree or higher | 41st of 111 |
| Median age | 36th of 111 |
| Owner-occupied share | 11th of 111 |
The tracts next to it on Polk County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 102.15 | 5th | $156,660±$8,841 · within the margin of this tract |
| Tract 117.03 | 6th | $155,000±$30,166 · within the margin of this tract |
| Tract 117.04 | 7th | $154,928±$20,311 · within the margin of this tract |
| Tract 115 | 8th | $150,156±$22,054 |
| Tract 102.13 | 9th | $149,706±$32,018 · within the margin of this tract |
| Tract 104.07 | 10th | $146,100±$24,487 · within the margin of this tract |
| Tract 113.01 | 11th | $137,098±$39,041 · 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 115?
4 of the 18 figures for Census Tract 115 on this page carry a coefficient of variation over 40% and are 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