South Miami, Florida demographics

South Miami, FL demographics: median age 38.9; 56.3% 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 Miami city, Florida · Incorporated city · GEOID 1267550. The survey estimates a population of 12,277 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in South Miami is 38.9 years, with a 90% margin of error of 3.1 years. There are 4,704 households (±296). 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	38.9 ±3.1	42.6 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 12,277
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
Under 18	2,644 ±372	21.5% ±3.0 pp	19.5%	22.0%
18–34	3,030 ±630	24.7% ±5.1 pp	20.7%	22.8%
35–64	4,617 ±523	37.6% ±4.3 pp	38.4%	38.0%
65 and older	1,986 ±369	16.2% ±3.0 pp	21.3%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 12,277
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
Male	6,060 ±325	49.4% ±2.6 pp	49.1%	49.5%
Female	6,217 ±329	50.6% ±2.7 pp	50.9%	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: 12,277
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
White alone	3,808 ±555	31.0% ±4.5 pp	55.9%	61.0%
Black or African American alone	1,458 ±530	11.9% ±4.3 pp	15.1%	12.2%
American Indian and Alaska Native alone	0 ±24 · low precision	0.0% ±0.2 pp · low precision	0.3%	0.9%
Asian alone	354 ±155	2.9% ±1.3 pp	2.9%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±24 · low precision	0.0% ±0.2 pp · low precision	0.1%	0.2%
Some other race alone	645 ±317	5.3% ±2.6 pp	6.3%	7.1%
Two or more races	6,012 ±833	49.0% ±6.8 pp	19.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 12,277
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
Not Hispanic or Latino	5,675 ±430	46.2% ±3.5 pp	72.6%	80.7%
Hispanic or Latino	6,602 ±434	53.8% ±3.5 pp	27.4%	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: 4,704
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
Married-couple family	2,031 ±242	43.2% ±4.4 pp	46.7%	46.9%
Other family: male householder, no spouse present	179 ±98 · low precision	3.8% ±2.1 pp · low precision	5.2%	5.1%
Other family: female householder, no spouse present	491 ±128	10.4% ±2.6 pp	12.7%	12.2%
Nonfamily: householder living alone	1,527 ±340	32.5% ±6.9 pp	28.3%	28.7%
Nonfamily: householder not living alone	476 ±218	10.1% ±4.6 pp	7.2%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 4,704
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
Households with people under 18	1,115 ±190	23.7% ±3.8 pp	26.5%	29.5%
Households without people under 18	3,589 ±339	76.3% ±5.4 pp	73.5%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 4,704
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
One-person nonfamily households	1,527 ±340	32.5% ±6.9 pp	28.3%	28.7%
Two-person households	1,476 ±310	31.4% ±6.3 pp	36.6%	33.8%
Three-person households	564 ±136	12.0% ±2.8 pp	15.4%	15.3%
Four-person households	790 ±245	16.8% ±5.1 pp	11.6%	12.6%
Five-person households	189 ±73	4.0% ±1.5 pp	5.2%	5.9%
Six-person households	85 ±57 · low precision	1.8% ±1.2 pp · low precision	1.9%	2.2%
Seven or more people	73 ±54 · low precision	1.6% ±1.1 pp · low precision	1.1%	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: 12,277
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
Native	6,996 ±656	57.0% ±5.3 pp	78.1%	85.9%
Foreign born	5,281 ±659	43.0% ±5.4 pp	21.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 11,484
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
English only	4,556 ±754	39.7% ±6.5 pp	69.4%	77.7%
Spanish	5,661 ±568	49.3% ±4.8 pp	22.6%	13.6%
French, Haitian, or Cajun	314 ±171 · low precision	2.7% ±1.5 pp · low precision	2.7%	0.7%
German or other West Germanic	81 ±52 · low precision	0.7% ±0.5 pp · low precision	0.4%	0.5%
Russian, Polish, or other Slavic	59 ±44 · low precision	0.5% ±0.4 pp · low precision	0.7%	0.7%
Other Indo-European	578 ±414 · low precision	5.0% ±3.6 pp · low precision	1.9%	2.0%
Korean	21 ±18 · low precision	0.2% ±0.2 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	99 ±73 · low precision	0.9% ±0.6 pp · low precision	0.4%	1.1%
Vietnamese	3 ±6 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.5%
Tagalog, including Filipino	12 ±34 · low precision	0.1% ±0.3 pp · low precision	0.3%	0.6%
Other Asian and Pacific Island	73 ±71 · low precision	0.6% ±0.6 pp · low precision	0.5%	1.1%
Arabic	0 ±24 · low precision	0.0% ±0.2 pp · low precision	0.4%	0.5%
Other and unspecified	27 ±24 · low precision	0.2% ±0.2 pp · low precision	0.4%	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: 8,545
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
Less than high school graduate	525 ±237	6.1% ±2.7 pp	10.1%	10.4%
High school graduate or equivalency	1,572 ±342	18.4% ±3.8 pp	27.2%	26.0%
Some college, no degree	912 ±241	10.7% ±2.8 pp	18.5%	19.1%
Associate’s degree	726 ±369 · low precision	8.5% ±4.3 pp · low precision	10.1%	8.8%
Bachelor’s degree	2,454 ±513	28.7% ±5.8 pp	21.3%	21.6%
Graduate or professional degree	2,356 ±353	27.6% ±3.8 pp	12.9%	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: 12,134
Category	Count ± MOE	Share ± MOE (pp)	Florida	U.S.
Same house	10,650 ±325	87.8% ±2.6 pp	86.3%	87.7%
Moved within same county	719 ±249	5.9% ±2.1 pp	6.6%	6.3%
Moved from a different county in the same state	174 ±125 · low precision	1.4% ±1.0 pp · low precision	3.1%	3.1%
Moved from a different state	266 ±181 · low precision	2.2% ±1.5 pp · low precision	2.9%	2.3%
Moved from abroad	325 ±296 · low precision	2.7% ±2.4 pp · low precision	1.1%	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

10.4% of South Miami residents (±5.6 percentage points) had no health insurance coverage when surveyed, compared with 11.5% in Florida and 8.4% nationally. 93.5% 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 Miami	Florida	U.S.	Compared with Florida
People without health insurance Civilian noninstitutionalized population	10.4% ±5.6 pp · low precision	11.5%	8.4%	Not statistically different
Households with a broadband subscription Households	93.5% ±2.5 pp	91.6%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	2.0% ±0.9 pp	7.4%	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 Miami . 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 Miami housing and cost context or return to the city profile.