Census tract · Jefferson County
Census Tract 904, Jefferson County, Iowa
Census Tract 904, GEOID 19101090400, in Jefferson County, Iowa, mostly within Fairfield (77% of its census blocks). 5,248 residents in the ACS 2020-2024 5-year estimates (±492); the 2020 Census counted 4,887.
Residents, 2020-2024
5,248
±492 (90% margin)
2020 Census count: 4,887
Median household income
$57,237
±$25,123 (90% margin)
Jefferson County: $61,620
Median home value
$167,700
±$13,615 (90% margin)
Jefferson County: $163,400
Median gross rent
$873
±$67 (90% margin)
Jefferson County: $883
Where is Census Tract 904?
Census Tract 904 is one of 5 census tracts in Jefferson County, Iowa. It covers 9.51 square miles of land, 514 residents per square mile in 2020. Its GEOID, 19101090400, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Fairfield | 77% |
4 census tracts border Census Tract 904: Tract 901 ($92,083), Tract 902 ($63,438), Tract 903.01 ($51,667) and Tract 903.02 ($50,896). 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 904?
The 2020-2024 American Community Survey puts Census Tract 904's population at 5,248 (±492) in 2,248 households; the 2020 Census counted 4,887 residents and 2,399 housing units.
| Measure | Tract 904 | Fairfield |
|---|---|---|
| Total population | 5,248 ±492 | 9,456 |
| Households | 2,248 ±247 | 4,115 |
| Average household size | 2.00 ±0.14 | 2.05 |
| Housing units | 2,446 ±233 | 4,631 |
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 904?
The median resident of Census Tract 904 is 40.5 years old; 9.6% are under 18 and 32.5% are 65 or older. The largest group is non-Hispanic white residents at 72.2%, then non-Hispanic Asian residents at 17.1%. 27.8% of residents were born outside the United States.
| Measure | Tract 904 | Fairfield |
|---|---|---|
| Median age | 40.5 ±6.4 | 40.0 |
| Under 18 years | 9.6% ±2.6 pts | 15.2% |
| 65 years and over | 32.5% ±4.4 pts | 26.6% |
| Hispanic or Latino (any race) | 2.8% ±2.4 pts | 4.7% |
| White alone, not Hispanic | 72.2% ±6.0 pts | 76.0% |
| Black or African American alone, not Hispanic | 4.1% ±1.4 pts | 3.9% |
| Asian alone, not Hispanic | 17.1% ±6.5 pts | 11.7% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.5 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.5 pts | 0.0% |
| Two or more races, not Hispanic | 3.3% ±1.9 pts | 3.2% |
| Some other race alone, not Hispanic | 0.6% ±1.0 pts | 0.4% |
| Born outside the United States | 27.8% ±6.5 pts | 20.4% |
| Speak a language other than English at home (age 5+) | 26.9% ±6.3 pts | 22.4% |
| Civilian veterans (age 18+) | 6.4% ±2.8 pts | 6.5% |
| With a disability | 7.6% ±3.4 pts | 11.9% |
| No health insurance coverage | 8.6% ±3.3 pts | 9.2% |
| High school graduate or higher (age 25+) | 99.6% ±0.5 pts | 97.2% |
| Bachelor's degree or higher (age 25+) | 62.7% ±7.2 pts | 52.9% |
| Graduate or professional degree (age 25+) | 28.0% ±6.4 pts | 22.8% |
| Lived in the same house a year earlier | 70.4% ±6.7 pts | 76.7% |
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 904 earn?
Half of the 2,248 households in Census Tract 904 earn less than $57,237 a year (±$25,123), against $61,620 across Jefferson County: 3rd highest of the county's 5 tracts with a reliable estimate. 23.7% of residents live below the poverty line.
| Measure | Tract 904 | Fairfield |
|---|---|---|
| Median household income | $57,237 ±$25,123 | $51,311 |
| Mean household income | $94,571 ±$26,790 | $81,231 |
| Per capita income | $41,100 ±$11,651 | $36,189 |
| People below the poverty line | 23.7% ±7.2 pts | 20.7% |
| Children under 18 below the poverty line | 9.7% ±16.6 pts | 14.6% |
| Households receiving SNAP | 10.1% ±6.3 pts | 14.5% |
| Households with a computer | 98.0% ±2.5 pts | 97.2% |
| Households with a broadband subscription | 90.3% ±5.9 pts | 88.4% |
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 904?
Owners occupy 68.7% of Census Tract 904's occupied homes and renters 31.3%. The median owner-occupied home is valued at $167,700 by its owner (±$13,615). The median renter pays $873 a month including utilities, and 78.3% of renters pay 35% or more of their income on rent.
| Measure | Tract 904 | Fairfield |
|---|---|---|
| Median home value (owner-occupied) | $167,700 ±$13,615 | $156,000 |
| Median gross rent | $873 ±$67 | $870 |
| Renters paying 35% or more of income on rent | 78.3% ±12.4 pts | 51.2% |
| Median monthly owner costs, with a mortgage | $1,517 ±$163 | $1,385 |
| Owner-occupied homes | 68.7% ±7.2 pts | 60.0% |
| Renter-occupied homes | 31.3% ±7.2 pts | 40.0% |
| Housing units | 2,446 ±233 | 4,631 |
| Single-family detached homes | 59.8% ±8.6 pts | 66.5% |
| Mobile homes | 4.9% ±4.4 pts | 5.0% |
| Built 2020 or later | 0.0% ±1.0 pts | 0.0% |
| Built 2010 to 2019 | 12.2% ±4.8 pts | 6.2% |
| Built 1939 or earlier | 21.5% ±7.6 pts | 30.4% |
| Households with no vehicle | 8.2% ±7.1 pts | 10.9% |
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 904 get to work?
49.9% of Census Tract 904's workers drive alone and 37.4% work from home. The average trip to work takes 15.2 minutes.
| Measure | Tract 904 | Fairfield |
|---|---|---|
| In the labor force (age 16+) | 46.8% ±5.7 pts | 55.6% |
| Unemployment rate | 14.2% ±10.8 pts | 11.8% |
| Drove alone to work | 49.9% ±11.9 pts | 60.1% |
| Carpooled | 5.2% ±3.8 pts | 4.8% |
| Public transportation | 0.0% ±1.3 pts | 0.0% |
| Walked | 6.6% ±3.6 pts | 6.0% |
| Worked from home | 37.4% ±11.2 pts | 25.0% |
| Mean travel time to work | 15.2 min ±6.2 | 13.2 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 904 compare with the other tracts in Jefferson County?
Among Jefferson County's tracts with a reliable estimate, Census Tract 904 ranks as shown below (1 = highest).
| Measure | In Jefferson County | In Fairfield |
|---|---|---|
| Population | 1st of 5 | 1st of 3 |
| Residents per square mile | 2nd of 5 | 2nd of 3 |
| Median household income | 3rd of 5 | 1st of 3 |
| Per capita income | 1st of 5 | 1st of 3 |
| Median home value | 2nd of 5 | 1st of 3 |
| Median gross rent | 3rd of 5 | 2nd of 3 |
| Poverty rate | 1st of 4 | 1st of 3 |
| Bachelor's degree or higher | 1st of 5 | 1st of 3 |
| Median age | 4th of 5 | 2nd of 3 |
| Owner-occupied share | 3rd of 5 | 1st of 3 |
The tracts next to it on Jefferson County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 901 | 1st | $92,083±$23,124 |
| Tract 902 | 2nd | $63,438±$8,558 · within the margin of this tract |
| Tract 904 | 3rd | $57,237±$25,123 |
| Tract 903.01 | 4th | $51,667±$15,831 · within the margin of this tract |
| Tract 903.02 | 5th | $50,896±$11,497 · 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 904?
1 of the 18 figures for Census Tract 904 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