Jennings: Demographics & People
Jennings is home to 346 people, in 124 households. Population shrank 4.2% from 361 (2022) to 346 (2024). Median age 38.2 years. (3.4y younger than Pawnee County; 3.0y older than Oklahoma). Children under 18 are 35% of the population. Population is 75% White (non-Hispanic) and 5% Black. The community is relatively homogeneous (Simpson index 0.13). 60% of households are family-led. County is gaining 720 residents per year (2022-2023). County health: 41% adult obesity, 18% smoke.
- 2.8 people per household (vs Oklahoma avg 2.6).
- 40% non-family households (singles, roommates) (vs Oklahoma 39%).
- 111 dependents per 100 working-age (youth + seniors / 18-64) (vs Oklahoma 67).
Population & Trend
Population shrank 4.2% from 361 (2022) to 346 (2024). Estimated 2026 population: ~331 (extrapolated at -2.1%/yr trend). Census Bureau Vintage estimate: 313.
| Census data vintage | 2024 |
|---|---|
| Population | 15,553 people |
| Annual growth rate · Population change | -4.2% |
| Annual growth rate · Population (2022) | 361 |
| Annual growth rate · Population (2024) | 346 |
| Annual growth rate · Trend category | declining |
| Population | 346 people (vs Oklahoma 63,420) |
| Population Estimate | 313 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 38.2y is 0.7 years younger than the U.S. median (38.9y). Children under 18 make up 35% — above the U.S. share of ~22%.
| Age Summary · Median age | 38.2 years (vs Oklahoma 35.2y) |
|---|---|
| Age Summary · Children Pct | 34.7% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 346 |
| Age Summary · Under 18 | 120 |
| Age Summary · 18 To 34 | 44.0× |
| Age Summary · 35 To 64 | 120.0× |
| Age Summary · 65 Plus | 62 |
| Population under 18 | 120 |
| Median age | 38.2 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 346 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.13 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 255 |
|---|---|
| Black residents | 18 |
| Hispanic or Latino residents | 1 |
| Diversity Index · Diversity index (Simpson) | 13.0% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 93.1% |
| Black population | 4.9% (vs Oklahoma 5.5%) |
| White (non-Hispanic) population | 75.1% (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 (7)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS).
| Residents born in this state | 277 |
|---|---|
| Residents born in another state | 69 |
| Share born in this state | 80.1% |
| Share born in another state | 19.9% |
| Native-born U.S. citizens | 19.9% |
| Total foreign-born residents | 125 |
Households & Family Composition
124 households. Averaging 2.9 people each — larger than the U.S. average of 2.5. 60% are family households — below the U.S. share of ~65%. Of 77 families, 23% are married couples with children.
| Children under 18 | 116 |
|---|---|
| Total families | 77 |
| Married couples with children | 18 |
| Average household size | 2.91 |
| Women who gave birth (past year) | 13.3% |
| Grandparents living with grandchildren | 30 |
| Grandparents responsible for grandchildren | 9 |
| Family households | 74 households (vs Oklahoma 16,590) |
| Households that are families | 59.7% (vs Oklahoma 61.1%) |
| Total households | 124 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. 17.4% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 720 residents per year on net (IRS migration data).
| Moved within the county (past year) | 17.4% |
|---|---|
| Migration · People moving in (annual) | 14,635 |
| Migration · People moving out (annual) | 13,915 |
| Migration · Net migration (in − out) | 720 |
| Migration · Population growing | Yes |
| 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 | 17 |
|---|---|
| Disability rate | 5.8% |
Other
| Congressional District · District | 3 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 40117 |
| Cdc Birth Rate · State Fips | 40 |
| Cdc Birth Rate · County Fips | 117 |
| Cdc Birth Rate · County | Pawnee |
| Cdc Birth Rate · Birth Rate | 37.0% |
| Cdc Birth Rate · Lower Ci | 29.90 |
| Cdc Birth Rate · Upper Ci | 45.20 |
| Cdc Mortality · Fips | 40117 |
| Cdc Mortality · County | Pawnee County |
| Cdc Mortality · Urban Rural | Medium metro |
| Cdc Mortality · Total Deaths 2020 2023 | 569 |
| Cdc Vaccination · Fips | 40117 |
| Cdc Vaccination · County | Pawnee County |
| Cdc Vaccination · Dose1 Pop Pct | 60.9% |
| Cdc Vaccination · Series Complete Pct | 51.4% |
| Cdc Vaccination · Booster Pct | 46.9% |
| Cdc Vaccination · Population 2019 | 16,376 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 1.50 |
| Family Score · Schools | 1 |
| Family Score · Children Pct | 34.7% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 346, declining, family-oriented, working-class, blue collar |
| Town Summary · Population | 346 people (vs Oklahoma 63,420) |
| Town Summary · County | Pawnee County |
Sources: NCES school congressional district assignment · federal dataset cascade