South Tucson, Arizona demographics

South Tucson, AZ demographics: median age 41.7; 13.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · South Tucson city, Arizona · Incorporated city · GEOID 0468850. The survey estimates a population of 4,550 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in South Tucson is 41.7 years, with a 90% margin of error of 3.9 years. There are 1,729 households (±188). 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	41.7 ±3.9	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 4,550
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
Under 18	1,140 ±292	25.1% ±6.4 pp	21.6%	22.0%
18–34	751 ±216	16.5% ±4.8 pp	23.2%	22.8%
35–64	2,014 ±338	44.3% ±7.4 pp	36.2%	38.0%
65 and older	645 ±205	14.2% ±4.5 pp	18.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 4,550
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
Male	2,369 ±165	52.1% ±3.6 pp	49.9%	49.5%
Female	2,181 ±164	47.9% ±3.6 pp	50.1%	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: 4,550
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
White alone	1,205 ±452	26.5% ±9.9 pp	59.0%	61.0%
Black or African American alone	107 ±112 · low precision	2.4% ±2.5 pp · low precision	4.6%	12.2%
American Indian and Alaska Native alone	490 ±319 · low precision	10.8% ±7.0 pp · low precision	4.0%	0.9%
Asian alone	14 ±18 · low precision	0.3% ±0.4 pp · low precision	3.6%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.2%
Some other race alone	1,569 ±389	34.5% ±8.5 pp	9.1%	7.1%
Two or more races	1,165 ±370	25.6% ±8.1 pp	19.5%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 4,550
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
Not Hispanic or Latino	698 ±320	15.3% ±7.0 pp	68.6%	80.7%
Hispanic or Latino	3,852 ±323	84.7% ±7.0 pp	31.4%	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: 1,729
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
Married-couple family	477 ±138	27.6% ±7.4 pp	46.7%	46.9%
Other family: male householder, no spouse present	102 ±80 · low precision	5.9% ±4.6 pp · low precision	5.6%	5.1%
Other family: female householder, no spouse present	519 ±120	30.0% ±6.1 pp	11.9%	12.2%
Nonfamily: householder living alone	574 ±186	33.2% ±10.1 pp	27.5%	28.7%
Nonfamily: householder not living alone	57 ±52 · low precision	3.3% ±3.0 pp · low precision	8.2%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 1,729
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
Households with people under 18	687 ±104	39.7% ±4.2 pp	28.7%	29.5%
Households without people under 18	1,042 ±199	60.3% ±9.5 pp	71.3%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 1,729
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
One-person nonfamily households	574 ±186	33.2% ±10.1 pp	27.5%	28.7%
Two-person households	409 ±163	23.7% ±9.0 pp	35.6%	33.8%
Three-person households	262 ±111	15.2% ±6.2 pp	14.3%	15.3%
Four-person households	292 ±101	16.9% ±5.5 pp	11.8%	12.6%
Five-person households	161 ±84 · low precision	9.3% ±4.8 pp · low precision	6.1%	5.9%
Six-person households	0 ±20 · low precision	0.0% ±1.1 pp · low precision	2.8%	2.2%
Seven or more people	31 ±48 · low precision	1.8% ±2.8 pp · low precision	1.9%	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: 4,550
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
Native	3,556 ±291	78.2% ±6.3 pp	87.0%	85.9%
Foreign born	994 ±292	21.8% ±6.4 pp	13.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 4,445
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
English only	1,594 ±416	35.9% ±9.3 pp	74.3%	77.7%
Spanish	2,749 ±424	61.8% ±9.5 pp	19.3%	13.6%
French, Haitian, or Cajun	28 ±46 · low precision	0.6% ±1.0 pp · low precision	0.3%	0.7%
German or other West Germanic	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.4%	0.7%
Other Indo-European	0 ±14 · low precision	0.0% ±0.3 pp · low precision	1.1%	2.0%
Korean	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.3%
Chinese, including Mandarin and Cantonese	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.5%	1.1%
Vietnamese	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.5%
Tagalog, including Filipino	0 ±14 · low precision	0.0% ±0.3 pp · low precision	0.4%	0.6%
Other Asian and Pacific Island	18 ±29 · low precision	0.4% ±0.7 pp · low precision	0.7%	1.1%
Arabic	33 ±38 · low precision	0.7% ±0.9 pp · low precision	0.4%	0.5%
Other and unspecified	23 ±39 · low precision	0.5% ±0.9 pp · low precision	1.9%	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: 2,982
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
Less than high school graduate	1,008 ±272	33.8% ±8.7 pp	10.6%	10.4%
High school graduate or equivalency	909 ±202	30.5% ±6.3 pp	23.5%	26.0%
Some college, no degree	550 ±149	18.4% ±4.8 pp	23.3%	19.1%
Associate’s degree	128 ±92 · low precision	4.3% ±3.1 pp · low precision	9.3%	8.8%
Bachelor’s degree	234 ±125 · low precision	7.8% ±4.1 pp · low precision	20.3%	21.6%
Graduate or professional degree	153 ±97 · low precision	5.1% ±3.2 pp · low precision	13.0%	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: 4,550
Category	Count ± MOE	Share ± MOE (pp)	Arizona	U.S.
Same house	4,030 ±277	88.6% ±6.0 pp	85.7%	87.7%
Moved within same county	445 ±247 · low precision	9.8% ±5.4 pp · low precision	8.5%	6.3%
Moved from a different county in the same state	25 ±36 · low precision	0.5% ±0.8 pp · low precision	1.6%	3.1%
Moved from a different state	23 ±34 · low precision	0.5% ±0.7 pp · low precision	3.5%	2.3%
Moved from abroad	27 ±38 · low precision	0.6% ±0.8 pp · low precision	0.7%	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

16.4% of South Tucson residents (±4.2 percentage points) had no health insurance coverage when surveyed, compared with 10.5% in Arizona and 8.4% nationally. 77.4% 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	South Tucson	Arizona	U.S.	Compared with Arizona
People without health insurance Civilian noninstitutionalized population	16.4% ±4.2 pp	10.5%	8.4%	Higher
Households with a broadband subscription Households	77.4% ±9.1 pp	91.5%	91.0%	Lower
Veterans Civilian population age 18 and older	3.2% ±1.7 pp · low precision	7.9%	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 South Tucson . 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 South Tucson housing and cost context or return to the city profile.