Miami: Demographics & People
Miami's population stands at 12,926 people, in 4,946 households. Population shrank 0.3% from 12,960 (2022) to 12,926 (2024). Median age 32.2 years. (5.0y younger than Ottawa County; 3.0y younger than Oklahoma). Children under 18 are 26% of the population. Population is 61% White (non-Hispanic) and 7% Hispanic or Latino. 61% of households are family-led. County is gaining 245 residents per year (2022-2023). County health: 44% adult obesity, 22% smoke.
- 2.6 people per household (vs Oklahoma avg 2.6).
- 39% non-family households (singles, roommates) (vs Oklahoma 39%).
- 70 dependents per 100 working-age (youth + seniors / 18-64) (vs Oklahoma 67).
Population & Trend
Population shrank 0.3% from 12,960 (2022) to 12,926 (2024). Estimated 2026 population: ~12,892 (extrapolated at -0.1%/yr trend). Census Bureau Vintage estimate: 12,848.
| Census data vintage | 2024 |
|---|---|
| Population | 30,285 people |
| Annual growth rate · Population change | -0.3% |
| Annual growth rate · Population (2022) | 12,960 |
| Annual growth rate · Population (2024) | 12,926 |
| Annual growth rate · Trend category | stable |
| Population | 12,926 people (vs Oklahoma 63,420) |
| Population Estimate | 12,848 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 32.2y is 6.7 years younger than the U.S. median (38.9y). Children under 18 make up 26% — above the U.S. share of ~22%.
| Age Summary · Median age | 32.2 years (vs Oklahoma 35.2y) |
|---|---|
| Age Summary · Children Pct | 26.3% |
| Age Summary · Character | young professional |
| Age Summary · Total Pop | 12,926 |
| Age Summary · Under 18 | 3,395 |
| Age Summary · 18 To 34 | 3,595.0× |
| Age Summary · 35 To 64 | 3,991.0× |
| Age Summary · 65 Plus | 1,945 |
| Population under 18 | 3,395 |
| Median age | 32.2 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 12,926 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups).
| White residents | 8,129 |
|---|---|
| Black residents | 257 |
| Asian residents | 106 |
| Hispanic or Latino residents | 741 |
| Diversity Index · Simpson Index | 51.9% |
| Diversity Index · Interpretation | moderately diverse |
| Asian population | 1.0% (vs Oklahoma 3.2%) |
| Black population | 2.1% (vs Oklahoma 5.5%) |
| Hispanic or Latino population | 6.7% (vs Oklahoma 12.3%) |
| White (non-Hispanic) population | 60.7% (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 (8)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 0.6% are foreign-born — below the U.S. average of 13.9%. 4% have naturalized to U.S. citizenship.
| Residents born in this state | 7,245 |
|---|---|
| Residents born in another state | 5,136 |
| Share born in this state | 56.0% |
| Share born in another state | 44.0% |
| Native-born U.S. citizens | 39.7% |
| Foreign-born residents | 0.6% |
| Naturalized citizens | 3.6% |
| Total foreign-born residents | 421 |
| From Europe | 71 |
| From Asia | 4 |
| From Africa | 40 |
Households & Family Composition
4,946 households. Averaging 2.4 people each — matches the U.S. average of 2.5. 61% are family households — below the U.S. share of ~65%. Of 3,032 families, 25% are married couples with children.
| Children under 18 | 3,321 |
|---|---|
| Total families | 3,032 |
| Married couples with children | 753 |
| Single-parent households | 215 |
| Average household size | 2.43 |
| Women who gave birth (past year) | 16.9% |
| Grandparents living with grandchildren | 313 |
| Grandparents responsible for grandchildren | 130 |
| Family households | 3,014 households (vs Oklahoma 16,590) |
| Households that are families | 60.9% (at Oklahoma median) |
| Total households | 4,946 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. 14.1% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 245 residents per year on net (IRS migration data).
| Moved within the county (past year) | 14.1% |
|---|---|
| Migration · People moving in (annual) | 26,530 |
| Migration · People moving out (annual) | 26,285 |
| Migration · Net migration (in − out) | 245 |
| 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 | 1,284 |
|---|---|
| Disability rate | 10.1% |
Group Quarters
Group quarters are non-household living arrangements counted by the Census — college dormitories, nursing homes, military barracks, group homes, correctional facilities, and similar institutional or shared housing. 948 residents live in group quarters (7.3% of population).
| Living in group quarters | 948 |
|---|
Other
| Congressional District · District | 2 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 40115 |
| Cdc Birth Rate · State Fips | 40 |
| Cdc Birth Rate · County Fips | 115 |
| Cdc Birth Rate · County | Ottawa |
| Cdc Birth Rate · Birth Rate | 35.5% |
| Cdc Birth Rate · Lower Ci | 30.50 |
| Cdc Birth Rate · Upper Ci | 41.10 |
| Cdc Mortality · Fips | 40115 |
| Cdc Mortality · County | Ottawa County |
| Cdc Mortality · Urban Rural | Micropolitan |
| Cdc Mortality · Total Deaths 2020 2023 | 1,240 |
| Cdc Vaccination · Fips | 40115 |
| Cdc Vaccination · County | Ottawa County |
| Cdc Vaccination · Dose1 Pop Pct | 50.1% |
| Cdc Vaccination · Series Complete Pct | 41.2% |
| Cdc Vaccination · Booster Pct | 42.1% |
| Cdc Vaccination · Population 2019 | 31,127 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 5.80 |
| Family Score · Schools | 6 |
| Family Score · Childcare Centers | 6 |
| Family Score · Children Pct | 26.3% |
| Family Score · Rating | good |
| Town Summary · Key Facts | population 12,926, stable, young professional, working-class, mixed |
| Town Summary · Population | 12,926 people (vs Oklahoma 63,420) |
| Town Summary · County | Ottawa County |
Sources: NCES school congressional district assignment · federal dataset cascade