Greenfield: Demographics & People
Greenfield's population stands at 113 people, in 39 households. Population shrank 24.2% from 149 (2022) to 113 (2024). Median age 25.7 years. (15.5y younger than Blaine County; 9.5y younger than Oklahoma). Children under 18 are 39% of the population. Population is 71% White (non-Hispanic) and 5% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.12). 80% of households are family-led. County is losing 118 residents per year (2022-2023). County health: 44% adult obesity, 20% smoke.
- 2.9 people per household (vs Oklahoma avg 2.6).
- 20% non-family households (singles, roommates) (vs Oklahoma 39%).
- 157 dependents per 100 working-age (youth + seniors / 18-64) (vs Oklahoma 67).
Population & Trend
Population shrank 24.2% from 149 (2022) to 113 (2024). Estimated 2026 population: ~87 (extrapolated at -12.1%/yr trend). Census Bureau Vintage estimate: 59.
| Census data vintage | 2024 |
|---|---|
| Population | 8,735 people |
| Annual growth rate · Population change | -24.2% |
| Annual growth rate · Population (2022) | 149 |
| Annual growth rate · Population (2024) | 113 |
| Annual growth rate · Trend category | shrinking |
| Population | 113 people (vs Oklahoma 63,420) |
| Population Estimate | 59 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 25.7y is 13.2 years younger than the U.S. median (38.9y). Children under 18 make up 39% — above the U.S. share of ~22%.
| Age Summary · Median age | 25.7 years (vs Oklahoma 35.2y) |
|---|---|
| Age Summary · Children Pct | 38.9% |
| Age Summary · Character | young community |
| Age Summary · Total Pop | 113 |
| Age Summary · Under 18 | 44 |
| Age Summary · 18 To 34 | 16.0× |
| Age Summary · 35 To 64 | 28.0× |
| Age Summary · 65 Plus | 25 |
| Population under 18 | 44 |
| Median age | 25.7 years (vs Oklahoma 35.2y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 113 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.12 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 104 |
|---|---|
| Hispanic or Latino residents | 7 |
| Diversity Index · Diversity index (Simpson) | 11.8% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 2 |
| Diversity Index · Largest group share | 93.7% |
| Hispanic or Latino population | 5.3% (vs Oklahoma 12.3%) |
| White (non-Hispanic) population | 70.8% (vs Oklahoma 57.8%) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Ancestry
Self-reported ancestry from Census ACS — what residents report as their ethnic origin, separate from race. Counts can exceed population because people can list multiple ancestries.
Top (4)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS).
| Residents born in this state | 92 |
|---|---|
| Residents born in another state | 21 |
| Share born in this state | 81.4% |
| Share born in another state | 18.6% |
| Native-born U.S. citizens | 18.6% |
| Total foreign-born residents | 568 |
Households & Family Composition
39 households. Averaging 2.9 people each — larger than the U.S. average of 2.5. 80% are family households — above the U.S. share of ~65%. Of 40 families, 15% are married couples with children.
| Children under 18 | 59 |
|---|---|
| Total families | 40 |
| Married couples with children | 6 |
| Average household size | 2.87 |
| Women who gave birth (past year) | 17.9% |
| Grandparents living with grandchildren | 5 |
| Family households | 31 households (vs Oklahoma 16,590) |
| Households that are families | 79.5% (vs Oklahoma 61.1%) |
| Total households | 39 households (vs Oklahoma 23,671) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 2.9% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 118 residents per year on net (IRS migration data).
| Moved within the county (past year) | 2.9% |
|---|---|
| Migration · People moving in (annual) | 7,673 |
| Migration · People moving out (annual) | 7,791 |
| Migration · Net migration (in − out) | -118 |
| Migration · Year | 2022-2023 |
Sources: IRS SOI Migration 2021-2022 · Refreshed 2026-04-12
Disability
Census ACS measures self-reported functional limitations — vision, hearing, mobility, cognitive, self-care, or independent-living. The U.S. baseline disability rate is about 12–13%; rates trend higher with median age.
| Residents with a disability | 7 |
|---|---|
| Disability rate | 6.0% |
Other
| Congressional District · District | 3 |
|---|---|
| Congressional District · Formatted | OK-03 |
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 40011 |
| Cdc Birth Rate · State Fips | 40 |
| Cdc Birth Rate · County Fips | 011 |
| Cdc Birth Rate · County | Blaine |
| Cdc Birth Rate · Birth Rate | 35.1% |
| Cdc Birth Rate · Lower Ci | 26.80 |
| Cdc Birth Rate · Upper Ci | 45.10 |
| Cdc Mortality · Fips | 40011 |
| Cdc Mortality · County | Blaine County |
| Cdc Mortality · Urban Rural | Noncore |
| Cdc Mortality · Total Deaths 2020 2023 | 340 |
| Cdc Vaccination · Fips | 40011 |
| Cdc Vaccination · County | Blaine County |
| Cdc Vaccination · Dose1 Pop Pct | 56.1% |
| Cdc Vaccination · Series Complete Pct | 48.4% |
| Cdc Vaccination · Booster Pct | 45.5% |
| Cdc Vaccination · Population 2019 | 9,429 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 8.00 |
| Family Score · Schools | 14 |
| Family Score · Children Pct | 38.9% |
| Family Score · Rating | excellent |
| Town Summary · Key Facts | population 113, shrinking, young community, middle-class, mixed |
| Town Summary · Population | 113 people (vs Oklahoma 63,420) |
| Town Summary · County | Blaine County |
Sources: Census place-to-CD118 crosswalk (place_fips) · federal dataset cascade