Town · Oklahoma
Hydro, Oklahoma
Hydro, town, mostly in Caddo County (66.0% of its 2020 residents), with a part in Blaine County, Oklahoma. Hydro had 901 residents on July 1, 2025 by the Census Bureau's estimate, down 2.8% since 2020; the 2020 Census counted 927 and the ACS 2020-2024 5-year estimates put it at 1,157 (±166). GEOID 4036700.
Residents, July 2025 estimate
901
Census Bureau estimate (no margin published)
2020 Census count: 927 · ACS 2020-2024: 1,157 ±166
Median household income
$40,341
±$16,963 (90% margin)
Oklahoma: $65,039
Median home value
$155,100
±$44,737 (90% margin)
Oklahoma: $199,800
Median gross rent
$784
±$22 (90% margin)
Oklahoma: $1,014
Where is Hydro and what county is it in?
Hydro is a town mostly in Caddo County (66.0% of its 2020 residents), with a part in Blaine County, Oklahoma. It covers 0.7 square miles of land, 1,330 residents per square mile in 2020.
| County | 2020 residents | Share |
|---|---|---|
| Caddo County | 612 | 66.0% |
| Blaine County | 315 | 34.0% |
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Hydro, and is it growing?
The Census Bureau estimates that 901 people lived in Hydro on July 1, 2025, down 2.8% since 2020, while Oklahoma grew 4.1%. The 2020 Census counted 927 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,157 (±166).
| Measure | Hydro | Caddo County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,157 ±166 | 26,447 | no clear change |
| Households | 531 ±102 | 9,053 | +133 |
| Average household size | 2.08 ±0.25 | 2.77 | −0.39 |
| Housing units | 587 ±103 | 11,545 | no clear change |
Hydro's population since 2000
From 1,060 in 2000 to 901 in 2025: down 15.0%. The 2000, 2010 and 2020 figures are census counts, each for Hydro 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 Hydro?
The median resident of Hydro is 38.0 years old; 21.8% are under 18 and 24.8% are 65 or older. The largest group is non-Hispanic white residents at 80.3%, then Hispanic or Latino residents (of any race) at 10.4%.
| Measure | Hydro | Caddo County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.0 ±5.7 | 37.8 | no clear change |
| Under 18 years | 21.8% ±4.6 pts | 23.0% | – |
| 65 years and over | 24.8% ±7.6 pts | 15.7% | – |
| Male | 46.5% ±5.8 pts | 56.8% | – |
| Hispanic or Latino (any race) | 10.4% ±6.1 pts | 17.0% | +6.9 pts |
| White alone, not Hispanic | 80.3% ±6.4 pts | 53.9% | −9.3 pts |
| Black or African American alone, not Hispanic | 0.6% ±1.1 pts | 3.1% | – |
| Asian alone, not Hispanic | 0.0% ±2.1 pts | 0.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 2.0% ±1.7 pts | 15.7% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±2.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 6.7% ±2.6 pts | 9.8% | – |
| Some other race alone, not Hispanic | 0.0% ±2.1 pts | 0.1% | – |
| Born outside the United States | 0.4% ±0.5 pts | 4.4% | – |
| Speak a language other than English at home (age 5+) | 5.5% ±3.2 pts | 9.4% | – |
| Civilian veterans (age 18+) | 3.9% ±1.7 pts | 6.6% | – |
| With a disability | 23.1% ±7.8 pts | 18.5% | – |
| No health insurance coverage | 11.0% ±5.7 pts | 16.8% | no clear change |
| High school graduate or higher (age 25+) | 91.7% ±4.1 pts | 87.5% | – |
| Bachelor's degree or higher (age 25+) | 24.4% ±5.7 pts | 15.8% | no clear change |
| Graduate or professional degree (age 25+) | 8.9% ±3.1 pts | 4.2% | – |
| Lived in the same house a year earlier | 85.7% ±4.7 pts | 86.2% | – |
| Moved from another state in the past year | 0.0% ±2.2 pts | 1.1% | – |
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 Hydro earn?
Half of Hydro's 531 households earn less than $40,341 a year (±$16,963), against $55,353 in Caddo County and $65,039 in Oklahoma. In 2015-2019 it was $55,381 in 2024 dollars; the margins of error cannot tell the two periods apart. 13.6% of residents live below the poverty line.
| Measure | Hydro | Caddo County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $40,341 ±$16,963 | $55,353 | no clear change |
| Mean household income | $67,319 ±$9,435 | $68,492 | – |
| Per capita income | $33,424 ±$4,145 | $27,153 | no clear change |
| People below the poverty line | 13.6% ±4.1 pts | 18.3% | no clear change |
| Children under 18 below the poverty line | 14.3% ±8.4 pts | 25.1% | no clear change |
| Households receiving SNAP | 8.3% ±3.3 pts | 15.4% | – |
| Households with a computer | 85.1% ±13.6 pts | 92.0% | – |
| Households with a broadband subscription | 69.5% ±13.7 pts | 83.9% | – |
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 Hydro?
Owners occupy 74.0% of Hydro's occupied homes and renters 26.0%. The median owner-occupied home is valued at $155,100 by its owner (±$44,737). The median renter pays $784 a month including utilities, and 19.5% of renters pay 35% or more of their income on rent.
| Measure | Hydro | Caddo County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $155,100 ±$44,737 | $115,700 | no clear change |
| Median gross rent | $784 ±$22 | $734 | no clear change |
| Renters paying 35% or more of income on rent | 19.5% ±9.4 pts | 30.1% | no clear change |
| Median monthly owner costs, with a mortgage | $1,500 ±$200 | $1,166 | – |
| Owner-occupied homes | 74.0% ±7.0 pts | 72.7% | no clear change |
| Renter-occupied homes | 26.0% ±7.0 pts | 27.3% | – |
| Housing units | 587 ±103 | 11,545 | no clear change |
| Homeowner vacancy rate | 0.8% ±1.3 pts | 1.1% | – |
| Rental vacancy rate | 6.0% ±5.3 pts | 6.0% | – |
| Single-family detached homes | 82.6% ±5.8 pts | 81.3% | – |
| Mobile homes | 12.4% ±5.1 pts | 12.3% | – |
| Built 2020 or later | 0.2% ±0.6 pts | 0.1% | – |
| Built 2010 to 2019 | 4.9% ±2.5 pts | 5.9% | – |
| Built 1939 or earlier | 15.2% ±7.8 pts | 14.0% | – |
| Households with no vehicle | 0.2% ±0.6 pts | 6.9% | – |
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 Hydro work and get to work?
86.6% of Hydro's workers drive alone and 3.8% work from home. The average trip to work takes 24.1 minutes.
| Measure | Hydro | Caddo County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 55.2% ±8.1 pts | 53.8% | – |
| Unemployment rate | 6.6% ±6.3 pts | 5.8% | – |
| Drove alone to work | 86.6% ±4.5 pts | 79.0% | – |
| Carpooled | 6.7% ±4.3 pts | 11.9% | – |
| Public transportation | 0.2% ±0.5 pts | 0.8% | – |
| Walked | 1.0% ±1.7 pts | 1.8% | – |
| Worked from home | 3.8% ±2.4 pts | 5.3% | – |
| Mean travel time to work | 24.1 min ±7.7 | 23.8 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 Hydro?
No census tract lies mostly in Hydro; 2 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 1617Caddo County | 1,748 | $55,956 |
| Tract 9590Blaine County | 1,620 | $58,047 |
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 Hydro) · Census block assignment files
How does Hydro compare with other places in Oklahoma?
By the Census Bureau's July 2025 estimates, Hydro is the 10,734th-most populous of the 19,476 U.S. incorporated places that have one and the 225th-most populous of 591 in Oklahoma.
Hydro 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 | 225th | 591 |
Hydro's figures with every place in Oklahoma (CSV)
Every place in Oklahoma, sortable · Compare Hydro 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 Hydro?
14 of the 57 figures for Hydro 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 Hydro 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 Hydro.