Monroe City: Demographics & People
About 3,028 people live in Monroe City, in 1,129 households. Population shrank 4.2% from 3,162 (2022) to 3,028 (2024). Median age 37.5 years. (8.2y younger than Monroe County). Children under 18 are 26% of the population. Population is 85% White (non-Hispanic) and 8% Black. The community is relatively homogeneous (Simpson index 0.20). 64% of households are family-led. County health: 36% adult obesity, 22% smoke.
- 2.7 people per household (vs Missouri avg 2.4).
- 36% non-family households (singles, roommates) (vs Missouri 42%).
- 75 dependents per 100 working-age (youth + seniors / 18-64) (vs Missouri 67).
Population & Trend
Population shrank 4.2% from 3,162 (2022) to 3,028 (2024). Estimated 2026 population: ~2,900 (extrapolated at -2.1%/yr trend). Census Bureau Vintage estimate: 2,736.
| Census data vintage | 2024 |
|---|---|
| Population | 28,525 people |
| Annual growth rate · Population change | -4.2% |
| Annual growth rate · Population (2022) | 3,162 |
| Annual growth rate · Population (2024) | 3,028 |
| Annual growth rate · Trend category | declining |
| Population | 3,028 people (vs Missouri 29,363) |
| Population Estimate | 2,736 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 37.5y is 1.4 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 | 37.5 years (at Missouri median) |
|---|---|
| Age Summary · Children Pct | 26.2% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 3,028 |
| Age Summary · Under 18 | 793 |
| Age Summary · 18 To 34 | 640.0× |
| Age Summary · 35 To 64 | 1,086.0× |
| Age Summary · 65 Plus | 509 |
| Population under 18 | 793 |
| Median age | 37.5 years (at Missouri median) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 3,028 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.20 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 2,752 |
|---|---|
| Black residents | 266 |
| Asian residents | 1 |
| Hispanic or Latino residents | 65 |
| Diversity Index · Diversity index (Simpson) | 19.6% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 89.2% |
| Black population | 7.9% (vs Missouri 6.6%) |
| Hispanic or Latino population | 2.0% (vs Missouri 5.3%) |
| White (non-Hispanic) population | 84.9% (vs Missouri 77.7%) |
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).
| Residents born in this state | 2,477 |
|---|---|
| Residents born in another state | 505 |
| Share born in this state | 81.8% |
| Share born in another state | 18.2% |
| Native-born U.S. citizens | 16.7% |
| Naturalized citizens | 1.5% |
| Total foreign-born residents | 59 |
| From Africa | 20 |
Households & Family Composition
1,129 households. Averaging 2.6 people each — matches the U.S. average of 2.5. 64% are family households — near the U.S. share of ~65%. Of 752 families, 33% are married couples with children.
| Children under 18 | 786 |
|---|---|
| Total families | 752 |
| Married couples with children | 249 |
| Single-parent households | 44 |
| Average household size | 2.59 |
| Women who gave birth (past year) | 12.8% |
| Grandparents living with grandchildren | 74 |
| Grandparents responsible for grandchildren | 22 |
| Family households | 724 households (vs Missouri 7,284) |
| Households that are families | 64.1% (vs Missouri 58.3%) |
| Total households | 1,129 households (vs Missouri 11,992) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 10.6% moved within the county in the past year — the U.S. baseline is roughly 8–10%.
| Moved within the county (past year) | 10.6% |
|---|---|
| Migration · People moving in (annual) | 25,616 |
| Migration · People moving out (annual) | 25,600 |
| Migration · Net migration (in − out) | 16 |
| 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 | 197 |
|---|---|
| Disability rate | 6.3% |
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. 88 residents live in group quarters (2.9% of population).
| Living in group quarters | 88 |
|---|
Other
| Congressional District · District | 6 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 29127 |
| Cdc Birth Rate · State Fips | 29 |
| Cdc Birth Rate · County Fips | 127 |
| Cdc Birth Rate · County | Marion |
| Cdc Birth Rate · Birth Rate | 22.3% |
| Cdc Birth Rate · Lower Ci | 18.10 |
| Cdc Birth Rate · Upper Ci | 27.10 |
| Cdc Mortality · Fips | 29127 |
| Cdc Mortality · County | Marion County |
| Cdc Mortality · Urban Rural | Micropolitan |
| Cdc Mortality · Total Deaths 2020 2023 | 1,557 |
| Cdc Vaccination · Fips | 29127 |
| Cdc Vaccination · County | Marion County |
| Cdc Vaccination · Dose1 Pop Pct | 48.7% |
| Cdc Vaccination · Series Complete Pct | 43.5% |
| Cdc Vaccination · Booster Pct | 45.9% |
| Cdc Vaccination · Population 2019 | 28,530 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 2.80 |
| Family Score · Schools | 3 |
| Family Score · Childcare Centers | 1 |
| Family Score · Children Pct | 26.2% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 3,028, declining, family-oriented, middle-class, mixed |
| Town Summary · Population | 3,028 people (vs Missouri 29,363) |
| Town Summary · County | Marion County |
Sources: NCES school congressional district assignment · federal dataset cascade