Census tract · Woodbury County
Census Tract 31, Woodbury County, Iowa
Census Tract 31, GEOID 19193003100, in Woodbury County, Iowa, partly within Correctionville, Anthon, Danbury, Pierson and Cushing. 3,506 residents in the ACS 2020-2024 5-year estimates (±366); the 2020 Census counted 3,660.
Residents, 2020-2024
3,506
±366 (90% margin)
2020 Census count: 3,660
Median household income
$66,193
±$10,380 (90% margin)
Woodbury County: $73,658
Median home value
$104,900
±$14,757 (90% margin)
Woodbury County: $183,200
Median gross rent
$896
±$151 (90% margin)
Woodbury County: $981
Where is Census Tract 31?
Census Tract 31 is one of 29 census tracts in Woodbury County, Iowa. It covers 288.52 square miles of land, 13 residents per square mile in 2020. Its GEOID, 19193003100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Correctionville | 10% |
| Anthon | 9% |
| Danbury | 5% |
| Pierson | 4% |
| Cushing | 3% |
7 census tracts border Census Tract 31: Tract 803 in Cherokee County ($72,870), Tract 901 in Ida County ($63,536), Tract 902 in Ida County ($62,500), Tract 9601 in Monona County ($69,444), Tract 9705 in Plymouth County ($85,769), Tract 32 ($101,382) and Tract 35 ($85,758). 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 31?
The 2020-2024 American Community Survey puts Census Tract 31's population at 3,506 (±366) in 1,417 households; the 2020 Census counted 3,660 residents and 1,714 housing units.
| Measure | Tract 31 | Woodbury County |
|---|---|---|
| Total population | 3,506 ±366 | 106,247 |
| Households | 1,417 ±145 | 40,699 |
| Average household size | 2.45 ±0.24 | 2.54 |
| Housing units | 1,583 ±150 | 43,388 |
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 31?
The median resident of Census Tract 31 is 41.9 years old; 25.6% are under 18 and 23.8% are 65 or older. The largest group is non-Hispanic white residents at 90.4%, then Hispanic or Latino residents (of any race) at 6.6%.
| Measure | Tract 31 | Woodbury County |
|---|---|---|
| Median age | 41.9 ±5.9 | 36.1 |
| Under 18 years | 25.6% ±4.7 pts | 25.8% |
| 65 years and over | 23.8% ±4.3 pts | 15.9% |
| Hispanic or Latino (any race) | 6.6% ±5.7 pts | 19.1% |
| White alone, not Hispanic | 90.4% ±5.9 pts | 67.1% |
| Black or African American alone, not Hispanic | 0.2% ±0.4 pts | 4.9% |
| Asian alone, not Hispanic | 0.1% ±0.1 pts | 2.3% |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.1 pts | 1.3% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.7 pts | 0.7% |
| Two or more races, not Hispanic | 2.6% ±1.4 pts | 4.3% |
| Some other race alone, not Hispanic | 0.1% ±0.1 pts | 0.2% |
| Born outside the United States | 2.0% ±1.7 pts | 10.6% |
| Speak a language other than English at home (age 5+) | 7.4% ±6.2 pts | 18.5% |
| Civilian veterans (age 18+) | 9.9% ±2.6 pts | 5.7% |
| With a disability | 13.1% ±2.4 pts | 13.5% |
| No health insurance coverage | 4.2% ±1.0 pts | 7.3% |
| High school graduate or higher (age 25+) | 93.1% ±2.5 pts | 87.6% |
| Bachelor's degree or higher (age 25+) | 18.6% ±3.3 pts | 24.3% |
| Graduate or professional degree (age 25+) | 3.0% ±0.9 pts | 8.4% |
| Lived in the same house a year earlier | 89.3% ±5.8 pts | 91.4% |
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 31 earn?
Half of the 1,417 households in Census Tract 31 earn less than $66,193 a year (±$10,380), against $73,658 across Woodbury County: 16th highest of the county's 28 tracts with a reliable estimate. 11.4% of residents live below the poverty line.
| Measure | Tract 31 | Woodbury County |
|---|---|---|
| Median household income | $66,193 ±$10,380 | $73,658 |
| Mean household income | $79,483 ±$6,223 | $90,682 |
| Per capita income | $32,040 ±$2,783 | $35,564 |
| People below the poverty line | 11.4% ±3.9 pts | 14.0% |
| Children under 18 below the poverty line | 13.5% ±8.2 pts | 18.0% |
| Households receiving SNAP | 8.3% ±2.2 pts | 12.6% |
| Households with a computer | 92.5% ±2.0 pts | 94.0% |
| Households with a broadband subscription | 83.8% ±3.6 pts | 87.3% |
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 31?
Owners occupy 85.3% of Census Tract 31's occupied homes and renters 14.7%. The median owner-occupied home is valued at $104,900 by its owner (±$14,757). The median renter pays $896 a month including utilities, and 24.0% of renters pay 35% or more of their income on rent.
| Measure | Tract 31 | Woodbury County |
|---|---|---|
| Median home value (owner-occupied) | $104,900 ±$14,757 | $183,200 |
| Median gross rent | $896 ±$151 | $981 |
| Renters paying 35% or more of income on rent | 24.0% ±11.4 pts | 36.4% |
| Median monthly owner costs, with a mortgage | $1,190 ±$120 | $1,428 |
| Owner-occupied homes | 85.3% ±3.5 pts | 68.2% |
| Renter-occupied homes | 14.7% ±3.5 pts | 31.8% |
| Housing units | 1,583 ±150 | 43,388 |
| Single-family detached homes | 94.6% ±2.0 pts | 72.2% |
| Mobile homes | 2.2% ±1.2 pts | 3.5% |
| Built 2020 or later | 0.1% ±0.2 pts | 1.2% |
| Built 2010 to 2019 | 3.4% ±1.9 pts | 5.1% |
| Built 1939 or earlier | 43.8% ±5.2 pts | 30.7% |
| Households with no vehicle | 1.3% ±0.8 pts | 6.1% |
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 31 get to work?
81.1% of Census Tract 31's workers drive alone and 7.2% work from home. The average trip to work takes 24.3 minutes.
| Measure | Tract 31 | Woodbury County |
|---|---|---|
| In the labor force (age 16+) | 65.7% ±4.6 pts | 67.2% |
| Unemployment rate | 0.6% ±0.5 pts | 4.1% |
| Drove alone to work | 81.1% ±5.3 pts | 79.5% |
| Carpooled | 7.1% ±2.5 pts | 11.2% |
| Public transportation | 0.8% ±0.8 pts | 1.1% |
| Walked | 3.2% ±3.0 pts | 1.9% |
| Worked from home | 7.2% ±2.6 pts | 5.6% |
| Mean travel time to work | 24.3 min ±3.1 | 18.1 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 31 compare with the other tracts in Woodbury County?
Among Woodbury County's tracts with a reliable estimate, Census Tract 31 ranks as shown below (1 = highest).
| Measure | In Woodbury County |
|---|---|
| Population | 16th of 28 |
| Residents per square mile | 28th of 29 |
| Median household income | 16th of 28 |
| Per capita income | 15th of 28 |
| Median home value | 25th of 28 |
| Median gross rent | 19th of 27 |
| Poverty rate | 17th of 25 |
| Bachelor's degree or higher | 18th of 24 |
| Median age | 6th of 28 |
| Owner-occupied share | 4th of 28 |
The tracts next to it on Woodbury County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 20 | 13th | $70,000±$18,986 · within the margin of this tract |
| Tract 6 | 14th | $68,735±$14,950 · within the margin of this tract |
| Tract 5 | 15th | $68,182±$18,133 · within the margin of this tract |
| Tract 31 | 16th | $66,193±$10,380 |
| Tract 11 | 17th | $62,478±$12,649 · within the margin of this tract |
| Tract 19 | 18th | $61,667±$19,948 · within the margin of this tract |
| Tract 14 | 19th | $60,870±$10,572 · 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 31?
3 of the 18 figures for Census Tract 31 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