Norwalk, Iowa demographics

Norwalk, IA demographics: median age 37.8; 38.8% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Norwalk city, Iowa · Incorporated city · GEOID 1957675. The survey estimates a population of 14,183 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Norwalk is 37.8 years, with a 90% margin of error of 2.8 years. There are 5,610 households (±264). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	37.8 ±2.8	38.6 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 14,183
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
Under 18	3,770 ±464	26.6% ±3.3 pp	22.9%	22.0%
18–34	2,759 ±358	19.5% ±2.5 pp	22.5%	22.8%
35–64	5,652 ±528	39.9% ±3.7 pp	36.5%	38.0%
65 and older	2,002 ±322	14.1% ±2.3 pp	18.1%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 14,183
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
Male	6,713 ±303	47.3% ±2.1 pp	50.2%	49.5%
Female	7,470 ±303	52.7% ±2.1 pp	49.8%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 14,183
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
White alone	13,385 ±263	94.4% ±1.8 pp	84.1%	61.0%
Black or African American alone	9 ±19 · low precision	0.1% ±0.1 pp · low precision	3.9%	12.2%
American Indian and Alaska Native alone	15 ±16 · low precision	0.1% ±0.1 pp · low precision	0.4%	0.9%
Asian alone	167 ±145 · low precision	1.2% ±1.0 pp · low precision	2.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.2%
Some other race alone	36 ±38 · low precision	0.3% ±0.3 pp · low precision	2.4%	7.1%
Two or more races	571 ±236	4.0% ±1.7 pp	6.6%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 14,183
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
Not Hispanic or Latino	13,759 ±170	97.0% ±1.2 pp	92.7%	80.7%
Hispanic or Latino	424 ±165	3.0% ±1.2 pp	7.3%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 5,610
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
Married-couple family	3,047 ±316	54.3% ±5.0 pp	48.3%	46.9%
Other family: male householder, no spouse present	324 ±191 · low precision	5.8% ±3.4 pp · low precision	4.3%	5.1%
Other family: female householder, no spouse present	499 ±197	8.9% ±3.5 pp	9.0%	12.2%
Nonfamily: householder living alone	1,554 ±286	27.7% ±4.9 pp	30.9%	28.7%
Nonfamily: householder not living alone	186 ±141 · low precision	3.3% ±2.5 pp · low precision	7.6%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 5,610
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
Households with people under 18	2,151 ±219	38.3% ±3.5 pp	28.5%	29.5%
Households without people under 18	3,459 ±395	61.7% ±6.4 pp	71.5%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 5,610
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
One-person nonfamily households	1,554 ±286	27.7% ±4.9 pp	30.9%	28.7%
Two-person households	1,831 ±304	32.6% ±5.2 pp	36.3%	33.8%
Three-person households	983 ±235	17.5% ±4.1 pp	12.9%	15.3%
Four-person households	716 ±178	12.8% ±3.1 pp	11.4%	12.6%
Five-person households	369 ±145	6.6% ±2.6 pp	5.6%	5.9%
Six-person households	105 ±68 · low precision	1.9% ±1.2 pp · low precision	1.9%	2.2%
Seven or more people	52 ±60 · low precision	0.9% ±1.1 pp · low precision	1.0%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 14,183
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
Native	13,991 ±126	98.6% ±0.9 pp	94.1%	85.9%
Foreign born	192 ±124 · low precision	1.4% ±0.9 pp · low precision	5.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 13,323
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
English only	13,037 ±274	97.9% ±1.5 pp	90.9%	77.7%
Spanish	118 ±84 · low precision	0.9% ±0.6 pp · low precision	4.7%	13.6%
French, Haitian, or Cajun	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.7%
German or other West Germanic	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.6%	0.5%
Russian, Polish, or other Slavic	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.4%	0.7%
Other Indo-European	113 ±117 · low precision	0.8% ±0.9 pp · low precision	0.6%	2.0%
Korean	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.3%	1.1%
Vietnamese	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.5%
Tagalog, including Filipino	27 ±42 · low precision	0.2% ±0.3 pp · low precision	0.1%	0.6%
Other Asian and Pacific Island	28 ±34 · low precision	0.2% ±0.3 pp · low precision	1.0%	1.1%
Arabic	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.5%
Other and unspecified	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.6%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 9,790
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
Less than high school graduate	220 ±158 · low precision	2.2% ±1.6 pp · low precision	6.7%	10.4%
High school graduate or equivalency	2,119 ±381	21.6% ±3.8 pp	30.0%	26.0%
Some college, no degree	2,331 ±411	23.8% ±4.1 pp	19.7%	19.1%
Associate’s degree	1,319 ±296	13.5% ±3.0 pp	12.1%	8.8%
Bachelor’s degree	2,696 ±339	27.5% ±3.3 pp	20.9%	21.6%
Graduate or professional degree	1,105 ±270	11.3% ±2.7 pp	10.5%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 14,086
Category	Count ± MOE	Share ± MOE (pp)	Iowa	U.S.
Same house	11,799 ±897	83.8% ±6.4 pp	87.1%	87.7%
Moved within same county	617 ±325 · low precision	4.4% ±2.3 pp · low precision	6.7%	6.3%
Moved from a different county in the same state	1,557 ±904 · low precision	11.1% ±6.4 pp · low precision	3.7%	3.1%
Moved from a different state	113 ±98 · low precision	0.8% ±0.7 pp · low precision	2.2%	2.3%
Moved from abroad	0 ±16 · low precision	0.0% ±0.1 pp · low precision	0.4%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

1.2% of Norwalk residents (±0.8 percentage points) had no health insurance coverage when surveyed, compared with 5.0% in Iowa and 8.4% nationally. 92.7% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Norwalk	Iowa	U.S.	Compared with Iowa
People without health insurance Civilian noninstitutionalized population	1.2% ±0.8 pp · low precision	5.0%	8.4%	Lower
Households with a broadband subscription Households	92.7% ±2.8 pp	88.9%	91.0%	Higher
Veterans Civilian population age 18 and older	4.5% ±1.4 pp	6.5%	6.2%	Lower

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Norwalk . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Norwalk housing and cost context or return to the city profile.