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Forest City: Demographics & People

Forest City is home to 4,290 people, in 1,653 households. Population grew 0.2% from 4,280 (2022) to 4,290 (2024). Median age 34.4 years. (8.3y younger than Winnebago County; 2.9y younger than Iowa). Children under 18 are 23% of the population. Population is 87% White (non-Hispanic) and 5% Black. The community is somewhat diverse (Simpson index 0.23). 57% of households are family-led. County is losing 268 residents per year (2022-2023). County health: 36% adult obesity, 18% smoke.

Population & Trend

Population grew 0.2% from 4,280 (2022) to 4,290 (2024) — close to the U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~4,299 (extrapolated at 0.1%/yr trend). Census Bureau Vintage estimate: 4,312.

Census data vintage2024
Population10,795 people
Annual growth rate · Population change0.2%
Annual growth rate · Population (2022)4,280
Annual growth rate · Population (2024)4,290
Annual growth rate · Population growingYes
Annual growth rate · Trend categorystable
Population4,290 people (vs Iowa 24,827)
Population Estimate4,312

Sources: Census ACS 5-Year 2023, Table B01003  ·  Refreshed 2026-04-12

Age Distribution

Median age 34.4y is 4.5 years younger than the U.S. median (38.9y). Children under 18 make up 23% — near the U.S. share of ~22%.

Age Summary · Median age34.4 years (vs Iowa 37.3y)
Age Summary · Children Pct22.7%
Age Summary · Characteryoung professional
Age Summary · Total Pop4,290
Age Summary · Under 18974
Age Summary · 18 To 341,219.0×
Age Summary · 35 To 641,341.0×
Age Summary · 65 Plus756
Population under 18974
Median age34.4 years (vs Iowa 37.3y)

Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023  ·  Refreshed 2026-04-29

Race, Ethnicity & Diversity

Of 4,290 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.23 (0 = single group, 1 = perfectly even distribution); this is read as somewhat diverse.

White residents3,759
Black residents91
Asian residents323
Hispanic or Latino residents143
Diversity Index · Diversity index (Simpson)23.4%
Diversity Index · Diversity labelsomewhat diverse
Diversity Index · Groups counted4
Diversity Index · Largest group share87.1%
Asian population3.2% (vs Iowa 1.9%)
Black population4.6% (vs Iowa 3.6%)
Hispanic or Latino population3.4% (vs Iowa 5.6%)
White (non-Hispanic) population87.1% (vs Iowa 81.2%)

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)

(unnamed)
German
(unnamed)
Irish
(unnamed)
Asian
(unnamed)
American
(unnamed)
Hispanic Total
(unnamed)
English
(unnamed)
Italian
(unnamed)
Puerto Rican

Citizenship & Origin

Where residents were born and their citizenship status (Census ACS). 0.5% are foreign-born — below the U.S. average of 13.9%. 7% have naturalized to U.S. citizenship.

Residents born in this state2,619
Residents born in another state1,357
Share born in this state61.0%
Share born in another state39.0%
Native-born U.S. citizens31.6%
Foreign-born residents0.5%
Naturalized citizens6.8%
Total foreign-born residents269
From Europe9
From Africa240

Households & Family Composition

1,653 households. Averaging 2.4 people each — matches the U.S. average of 2.5. 57% are family households — below the U.S. share of ~65%. Of 1,009 families, 34% are married couples with children.

Children under 181,048
Total families1,009
Married couples with children339
Single-parent households39
Average household size2.41
Women who gave birth (past year)13.1%
Grandparents living with grandchildren25
Grandparents responsible for grandchildren15
Family households944 households (vs Iowa 6,171)
Households that are families57.1% (at Iowa median)
Total households1,653 households (vs Iowa 10,135)

Sources: Census ACS 5-Year 2023  ·  Refreshed 2026-04-12

Residential Stability & Migration

How long residents have lived here and where they came from. 20.1% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 268 residents per year on net (IRS migration data).

Moved within the county (past year)20.1%
Migration · People moving in (annual)9,954
Migration · People moving out (annual)10,222
Migration · Net migration (in − out)-268
Migration · Year2022-2023

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 disability272
Disability rate6.6%

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. 495 residents live in group quarters (11.5% of population).

Living in group quarters495

Other

Congressional District · District4
Congressional District · Congress118th
Cdc Birth Rate · Fips19081
Cdc Birth Rate · State Fips19
Cdc Birth Rate · County Fips081
Cdc Birth Rate · CountyHancock
Cdc Birth Rate · Birth Rate12.2%
Cdc Birth Rate · Lower Ci7.90
Cdc Birth Rate · Upper Ci18.00
Cdc Mortality · Fips19081
Cdc Mortality · CountyHancock County
Cdc Mortality · Urban RuralNoncore
Cdc Mortality · Total Deaths 2020 2023395
Cdc Vaccination · Fips19081
Cdc Vaccination · CountyHancock County
Cdc Vaccination · Dose1 Pop Pct54.4%
Cdc Vaccination · Series Complete Pct51.3%
Cdc Vaccination · Booster Pct58.2%
Cdc Vaccination · Population 201910,630
Cdc Vaccination · Metro StatusNon-metro
Family Score · Score3.40
Family Score · Schools3
Family Score · Childcare Centers3
Family Score · Children Pct22.7%
Family Score · Ratingfair
Town Summary · Key Factspopulation 4,290, stable, young professional, middle-class, mixed
Town Summary · Population4,290 people (vs Iowa 24,827)
Town Summary · CountyHancock County

Sources: NCES school congressional district assignment · federal dataset cascade