City · Iowa
Delta, Iowa
Delta, city, in Keokuk County, Iowa. Delta had 255 residents on July 1, 2025 by the Census Bureau's estimate, down 2.3% since 2020; the 2020 Census counted 264 and the ACS 2020-2024 5-year estimates put it at 363 (±117). GEOID 1919855.
Residents, July 2025 estimate
255
Census Bureau estimate (no margin published)
2020 Census count: 264 · ACS 2020-2024: 363 ±117
Median household income
$52,083
±$16,610 (90% margin)
Iowa: $75,059
Median home value
$48,100
±$16,825 (90% margin)
Iowa: $208,000
Median gross rent
$1,038
±$962 (90% margin)
Iowa: $972
Where is Delta and what county is it in?
Delta is a city in Keokuk County, Iowa. It covers 1.0 square miles of land, 276 residents per square mile in 2020.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Delta, and is it growing?
The Census Bureau estimates that 255 people lived in Delta on July 1, 2025, down 2.3% since 2020, while Iowa grew 1.5%. The 2020 Census counted 264 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 363 (±117).
| Measure | Delta | Keokuk County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 363 ±117 | 9,924 | no clear change |
| Households | 131 ±37 | 4,068 | no clear change |
| Average household size | 2.77 ±0.59 | 2.41 | no clear change |
| Housing units | 165 ±39 | 4,647 | no clear change |
Delta's population since 2000
From 410 in 2000 to 255 in 2025: down 37.8%. The 2000, 2010 and 2020 figures are census counts, each for Delta as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Delta?
The median resident of Delta is 37.2 years old; 26.4% are under 18 and 13.5% are 65 or older. The largest group is non-Hispanic white residents at 86.0%, then Hispanic or Latino residents (of any race) at 6.6%.
| Measure | Delta | Keokuk County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 37.2 ±13.0 | 43.4 | – |
| Under 18 years | 26.4% ±12.7 pts | 22.4% | – |
| 65 years and over | 13.5% ±6.0 pts | 22.5% | – |
| Male | 53.4% ±10.9 pts | 51.7% | – |
| Hispanic or Latino (any race) | 6.6% ±5.9 pts | 2.3% | – |
| White alone, not Hispanic | 86.0% ±7.6 pts | 94.6% | −13.4 pts |
| Black or African American alone, not Hispanic | 2.2% ±3.4 pts | 0.3% | – |
| Asian alone, not Hispanic | 0.0% ±6.7 pts | 0.2% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±6.7 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±6.7 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.0% ±4.6 pts | 2.3% | – |
| Some other race alone, not Hispanic | 0.3% ±0.6 pts | 0.3% | – |
| Born outside the United States | 5.5% ±5.7 pts | 1.0% | – |
| Speak a language other than English at home (age 5+) | 7.0% ±7.3 pts | 3.0% | – |
| Civilian veterans (age 18+) | 13.9% ±7.3 pts | 6.5% | – |
| With a disability | 21.8% ±9.2 pts | 16.0% | – |
| No health insurance coverage | 2.5% ±2.8 pts | 4.0% | – |
| High school graduate or higher (age 25+) | 89.6% ±6.3 pts | 94.4% | – |
| Bachelor's degree or higher (age 25+) | 2.6% ±2.9 pts | 17.0% | – |
| Graduate or professional degree (age 25+) | 0.0% ±10.3 pts | 4.7% | – |
| Lived in the same house a year earlier | 90.9% ±7.3 pts | 91.6% | – |
| Moved from another state in the past year | 0.3% ±0.7 pts | 1.8% | – |
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 Delta earn?
Half of Delta's 131 households earn less than $52,083 a year (±$16,610), against $62,329 in Keokuk County and $75,059 in Iowa. In 2015-2019 it was $44,853 in 2024 dollars; the margins of error cannot tell the two periods apart. 12.2% of residents live below the poverty line.
| Measure | Delta | Keokuk County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $52,083 ±$16,610 | $62,329 | no clear change |
| Mean household income | $60,724 ±$13,938 | $83,451 | – |
| Per capita income | $24,416 ±$5,571 | $35,153 | no clear change |
| People below the poverty line | 12.2% ±6.9 pts | 12.1% | −20.9 pts |
| Children under 18 below the poverty line | 6.5% ±12.1 pts | 12.4% | – |
| Households receiving SNAP | 16.8% ±8.7 pts | 9.4% | – |
| Households with a computer | 86.3% ±8.6 pts | 91.8% | – |
| Households with a broadband subscription | 80.9% ±9.8 pts | 83.8% | – |
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 Delta?
Owners occupy 77.1% of Delta's occupied homes and renters 22.9%. The median owner-occupied home is valued at $48,100 by its owner (±$16,825).
| Measure | Delta | Keokuk County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $48,100 ±$16,825 | $118,700 | no clear change |
| Median gross rent | $1,038 ±$962 | $828 | – |
| Renters paying 35% or more of income on rent | 18.2% ±26.2 pts | 27.5% | – |
| Median monthly owner costs, with a mortgage | $888 ±$253 | $1,182 | – |
| Owner-occupied homes | 77.1% ±12.3 pts | 81.3% | no clear change |
| Renter-occupied homes | 22.9% ±12.3 pts | 18.7% | – |
| Housing units | 165 ±39 | 4,647 | no clear change |
| Homeowner vacancy rate | 0.9% ±2.3 pts | 0.6% | – |
| Rental vacancy rate | 14.3% ±21.2 pts | 3.9% | – |
| Single-family detached homes | 84.2% ±8.5 pts | 87.1% | – |
| Mobile homes | 5.5% ±5.2 pts | 3.0% | – |
| Built 2020 or later | 0.0% ±14.0 pts | 1.0% | – |
| Built 2010 to 2019 | 0.6% ±1.6 pts | 3.7% | – |
| Built 1939 or earlier | 63.6% ±10.9 pts | 46.6% | – |
| Households with no vehicle | 9.2% ±7.4 pts | 4.3% | – |
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 Delta work and get to work?
74.2% of Delta's workers drive alone. The average trip to work takes 32.6 minutes.
| Measure | Delta | Keokuk County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 59.4% ±10.5 pts | 60.7% | – |
| Unemployment rate | 9.6% ±8.1 pts | 4.5% | – |
| Drove alone to work | 74.2% ±14.7 pts | 79.7% | – |
| Carpooled | 16.6% ±14.1 pts | 6.5% | – |
| Public transportation | 0.0% ±15.2 pts | 0.2% | – |
| Walked | 0.0% ±15.2 pts | 3.6% | – |
| Worked from home | 9.3% ±9.4 pts | 9.5% | – |
| Mean travel time to work | 32.6 min ±13.6 | 26.5 min | no clear change |
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 census tracts are in Delta?
No census tract lies mostly in Delta; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 803Keokuk County | 2,507 | $60,106 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Delta) · Census block assignment files
How does Delta compare with other places in Iowa?
By the Census Bureau's July 2025 estimates, Delta is the 15,719th-most populous of the 19,476 U.S. incorporated places that have one and the 602nd-most populous of 939 in Iowa.
Delta is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 602nd | 939 |
Delta's figures with every place in Iowa (CSV)
Every place in Iowa, sortable · Compare Delta with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Delta?
27 of the 57 figures for Delta 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.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. 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 · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Delta are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Delta.