Town · Oklahoma
Cromwell, Oklahoma
Cromwell, town, in Seminole County, Oklahoma. Cromwell had 228 residents on July 1, 2025 by the Census Bureau's estimate, down 3.8% since 2020; the 2020 Census counted 238 and the ACS 2020-2024 5-year estimates put it at 238 (±69). GEOID 4018450.
Residents, July 2025 estimate
228
Census Bureau estimate (no margin published)
2020 Census count: 238 · ACS 2020-2024: 238 ±69
Median household income
$58,026
±$7,195 (90% margin)
Oklahoma: $65,039
Median home value
$74,300
±$3,217 (90% margin)
Oklahoma: $199,800
Median gross rent
$817
±$386 (90% margin)
Oklahoma: $1,014
Where is Cromwell and what county is it in?
Cromwell is a town in Seminole County, Oklahoma. It covers 0.6 square miles of land, 401 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 Cromwell, and is it growing?
The Census Bureau estimates that 228 people lived in Cromwell on July 1, 2025, down 3.8% since 2020, while Oklahoma grew 4.1%. The 2020 Census counted 238 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 238 (±69).
| Measure | Cromwell | Seminole County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 238 ±69 | 23,494 | no clear change |
| Households | 112 ±46 | 8,782 | no clear change |
| Average household size | 2.13 ±0.58 | 2.59 | no clear change |
| Housing units | 134 ±46 | 10,838 | no clear change |
Cromwell's population since 2000
From 265 in 2000 to 228 in 2025: down 14.0%. The 2000, 2010 and 2020 figures are census counts, each for Cromwell 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 Cromwell?
The median resident of Cromwell is 44.4 years old; 21.4% are under 18 and 32.8% are 65 or older. The largest group is non-Hispanic white residents at 62.6%, then non-Hispanic American Indian and Alaska Native residents at 31.9%.
| Measure | Cromwell | Seminole County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 44.4 ±16.9 | 39.2 | no clear change |
| Under 18 years | 21.4% ±11.2 pts | 24.3% | – |
| 65 years and over | 32.8% ±14.7 pts | 18.4% | – |
| Male | 58.0% ±11.3 pts | 49.2% | – |
| Hispanic or Latino (any race) | 5.0% ±6.4 pts | 5.7% | – |
| White alone, not Hispanic | 62.6% ±13.8 pts | 62.4% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±10.0 pts | 3.6% | – |
| Asian alone, not Hispanic | 0.0% ±10.0 pts | 0.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 31.9% ±12.6 pts | 18.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±10.0 pts | 0.1% | – |
| Two or more races, not Hispanic | 0.4% ±1.6 pts | 9.5% | – |
| Some other race alone, not Hispanic | 0.0% ±10.0 pts | 0.3% | – |
| Born outside the United States | 0.4% ±1.1 pts | 2.4% | – |
| Speak a language other than English at home (age 5+) | 7.7% ±4.4 pts | 3.9% | – |
| Civilian veterans (age 18+) | 2.7% ±2.6 pts | 8.2% | – |
| With a disability | 20.2% ±7.2 pts | 24.1% | – |
| No health insurance coverage | 18.5% ±8.6 pts | 17.1% | −13.4 pts |
| High school graduate or higher (age 25+) | 82.3% ±11.2 pts | 86.5% | – |
| Bachelor's degree or higher (age 25+) | 32.9% ±19.7 pts | 15.9% | – |
| Graduate or professional degree (age 25+) | 2.5% ±2.7 pts | 4.9% | – |
| Lived in the same house a year earlier | 100.0% ±10.2 pts | 89.4% | – |
| Moved from another state in the past year | 0.0% ±10.2 pts | 1.4% | – |
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 Cromwell earn?
Half of Cromwell's 112 households earn less than $58,026 a year (±$7,195), against $48,062 in Seminole County and $65,039 in Oklahoma. In 2015-2019 the median was $36,152 in 2024 dollars, so it rose by $21,874 after inflation. 19.9% of residents live below the poverty line.
| Measure | Cromwell | Seminole County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $58,026 ±$7,195 | $48,062 | +$21,874 |
| Mean household income | $65,199 ±$14,642 | $63,114 | – |
| Per capita income | $30,975 ±$9,210 | $25,225 | +$11,978 |
| People below the poverty line | 19.9% ±10.5 pts | 21.7% | no clear change |
| Children under 18 below the poverty line | 53.8% ±28.8 pts | 27.2% | – |
| Households receiving SNAP | 22.3% ±13.0 pts | 22.9% | – |
| Households with a computer | 89.3% ±8.6 pts | 89.5% | – |
| Households with a broadband subscription | 90.2% ±7.7 pts | 80.7% | – |
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 Cromwell?
Owners occupy 86.6% of Cromwell's occupied homes and renters 13.4%. The median owner-occupied home is valued at $74,300 by its owner (±$3,217). The median renter pays $817 a month including utilities, and 66.7% of renters pay 35% or more of their income on rent.
| Measure | Cromwell | Seminole County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $74,300 ±$3,217 | $99,500 | +$5,381 |
| Median gross rent | $817 ±$386 | $752 | no clear change |
| Renters paying 35% or more of income on rent | 66.7% ±31.7 pts | 38.9% | – |
| Median monthly owner costs, with a mortgage | $980 ±$164 | $1,136 | – |
| Owner-occupied homes | 86.6% ±9.3 pts | 71.0% | no clear change |
| Renter-occupied homes | 13.4% ±9.3 pts | 29.0% | – |
| Housing units | 134 ±46 | 10,838 | no clear change |
| Homeowner vacancy rate | 0.0% ±22.5 pts | 0.9% | – |
| Rental vacancy rate | 0.0% ±67.2 pts | 4.6% | – |
| Single-family detached homes | 82.8% ±9.5 pts | 76.7% | – |
| Mobile homes | 14.9% ±8.9 pts | 14.1% | – |
| Built 2020 or later | 0.0% ±16.9 pts | 1.2% | – |
| Built 2010 to 2019 | 1.5% ±2.1 pts | 7.8% | – |
| Built 1939 or earlier | 3.0% ±5.0 pts | 13.0% | – |
| Households with no vehicle | 5.4% ±5.6 pts | 7.0% | – |
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 Cromwell work and get to work?
85.0% of Cromwell's workers drive alone. The average trip to work takes 31.6 minutes.
| Measure | Cromwell | Seminole County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 33.7% ±13.8 pts | 51.0% | – |
| Unemployment rate | 6.3% ±7.8 pts | 6.3% | – |
| Drove alone to work | 85.0% ±10.3 pts | 79.1% | – |
| Carpooled | 5.0% ±5.8 pts | 9.2% | – |
| Public transportation | 0.0% ±32.7 pts | 0.1% | – |
| Walked | 0.0% ±32.7 pts | 2.3% | – |
| Worked from home | 10.0% ±10.3 pts | 8.1% | – |
| Mean travel time to work | 31.6 min ±5.5 | 24.0 min | +6.7 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
What census tracts are in Cromwell?
No census tract lies mostly in Cromwell; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 5831Seminole County | 1,607 | $50,515 |
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 Cromwell) · Census block assignment files
How does Cromwell compare with other places in Oklahoma?
By the Census Bureau's July 2025 estimates, Cromwell is the 16,082nd-most populous of the 19,476 U.S. incorporated places that have one and the 421st-most populous of 591 in Oklahoma.
Cromwell 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 | 421st | 591 |
Cromwell's figures with every place in Oklahoma (CSV)
Every place in Oklahoma, sortable · Compare Cromwell 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 Cromwell?
23 of the 57 figures for Cromwell 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 Cromwell 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 Cromwell.