City · Alabama
Semmes, Alabama
Semmes, city, in Mobile County, Alabama. Semmes had 6,259 residents on July 1, 2025 by the Census Bureau's estimate, up 21.0% since 2020; the 2020 Census counted 4,941 and the ACS 2020-2024 5-year estimates put it at 5,626 (±21). GEOID 0169240.
Residents, July 2025 estimate
6,259
Census Bureau estimate (no margin published)
2020 Census count: 4,941 · ACS 2020-2024: 5,626 ±21
Median household income
$66,417
±$8,337 (90% margin)
Alabama: $63,999
Median home value
$215,600
±$28,358 (90% margin)
Alabama: $209,900
Median gross rent
$1,057
±$362 (90% margin)
Alabama: $1,007
Where is Semmes and what county is it in?
Semmes is a city in Mobile County, Alabama. It covers 15.2 square miles of land, 325 residents per square mile in 2020.
Semmes is in the Mobile, AL metropolitan statistical area (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Semmes, and is it growing?
The Census Bureau estimates that 6,259 people lived in Semmes on July 1, 2025, up 21.0% since 2020, faster than Alabama (+3.3%). The 2020 Census counted 4,941 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 5,626 (±21).
| Measure | Semmes | Mobile County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 5,626±21 | 412,590 | +342 |
| Households | 2,286±217 | 161,665 | no clear change |
| Average household size | 2.44±0.23 | 2.50 | no clear change |
| Housing units | 2,562±261 | 186,082 | no clear change |
Semmes's population since 2015
From 4,930 in 2015 to 6,259 in 2025: up 27.0%. The 2000, 2010 and 2020 figures are census counts, each for Semmes as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Semmes?
The median resident of Semmes is 44.5 years old; 17.7% are under 18 and 24.4% are 65 or older. The largest group is non-Hispanic white residents at 77.1%, then non-Hispanic Black residents at 14.3%.
| Measure | Semmes | Mobile County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 44.5±4.6 | 38.5 | no clear change |
| Under 18 years | 17.7%±3.2 pts | 23.3% | – |
| 65 years and over | 24.4%±6.7 pts | 17.3% | – |
| Male | 48.6%±4.7 pts | 47.8% | – |
| Hispanic or Latino (any race) | 2.0%±1.8 pts | 3.5% | – |
| White alone, not Hispanic | 77.1%±6.3 pts | 54.8% | no clear change |
| Black or African American alone, not Hispanic | 14.3%±4.6 pts | 35.7% | – |
| Asian alone, not Hispanic | 0.5%±0.6 pts | 2.2% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.6%±0.7 pts | 0.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.7 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.6%±4.0 pts | 3.0% | – |
| Some other race alone, not Hispanic | 0.0%±0.7 pts | 0.5% | – |
| Born outside the United States | 2.2%±1.9 pts | 3.4% | – |
| Speak a language other than English at home (age 5+) | 3.0%±2.0 pts | 4.8% | – |
| Civilian veterans (age 18+) | 12.2%±5.2 pts | 7.7% | – |
| With a disability | 19.2%±5.1 pts | 14.5% | – |
| No health insurance coverage | 14.6%±6.6 pts | 10.4% | +7.7 pts |
| High school graduate or higher (age 25+) | 93.1%±4.7 pts | 89.3% | – |
| Bachelor's degree or higher (age 25+) | 18.0%±5.6 pts | 26.0% | no clear change |
| Graduate or professional degree (age 25+) | 7.4%±3.6 pts | 9.2% | – |
| Lived in the same house a year earlier | 94.1%±3.0 pts | 89.1% | – |
| Moved from another state in the past year | 0.9%±0.8 pts | 2.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Semmes earn?
Half of Semmes's 2,286 households earn less than $66,417 a year (±$8,337), against $58,880 in Mobile County and $63,999 in Alabama. In 2015-2019 it was $60,592 in 2024 dollars; the margins of error cannot tell the two periods apart. 22.5% of residents live below the poverty line.
| Measure | Semmes | Mobile County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $66,417±$8,337 | $58,880 | no clear change |
| Mean household income | $96,299±$21,853 | $81,713 | – |
| Per capita income | $39,257±$8,961 | $33,306 | no clear change |
| People below the poverty line | 22.5%±12.1 pts | 16.2% | no clear change |
| Children under 18 below the poverty line | 25.2%±16.4 pts | 22.9% | – |
| Households receiving SNAP | 7.5%±5.0 pts | 17.3% | – |
| Households with a computer | 95.1%±3.2 pts | 95.0% | – |
| Households with a broadband subscription | 86.0%±7.1 pts | 86.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Semmes?
Owners occupy 69.9% of Semmes's occupied homes and renters 30.1%. The median owner-occupied home is valued at $215,600 by its owner (±$28,358). The median renter pays $1,057 a month including utilities.
| Measure | Semmes | Mobile County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $215,600±$28,358 | $190,700 | no clear change |
| Median gross rent | $1,057±$362 | $1,052 | no clear change |
| Renters paying 35% or more of income on rent | 30.5%±25.1 pts | 44.6% | – |
| Median monthly owner costs, with a mortgage | $1,403±$119 | $1,404 | – |
| Owner-occupied homes | 69.9%±10.3 pts | 66.0% | no clear change |
| Renter-occupied homes | 30.1%±10.3 pts | 34.0% | – |
| Housing units | 2,562±261 | 186,082 | no clear change |
| Homeowner vacancy rate | 0.0%±2.5 pts | 1.1% | – |
| Rental vacancy rate | 0.0%±5.7 pts | 5.0% | – |
| Single-family detached homes | 79.6%±7.2 pts | 73.3% | – |
| Mobile homes | 8.4%±4.5 pts | 6.9% | – |
| Built 2020 or later | 3.8%±2.9 pts | 1.0% | – |
| Built 2010 to 2019 | 11.7%±5.2 pts | 8.0% | – |
| Built 1939 or earlier | 0.0%±1.5 pts | 4.0% | – |
| Households with no vehicle | 5.9%±6.5 pts | 6.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Semmes building?
Builders took permits for 52 new housing units in Semmes in 2025 (52 in single-family houses), 8.3 per 1,000 residents against 3.7 across Alabama.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Semmes work and get to work?
81.8% of Semmes's workers drive alone. The average trip to work takes 23.9 minutes.
| Measure | Semmes | Mobile County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 57.2%±7.2 pts | 58.5% | – |
| Unemployment rate | 6.8%±4.9 pts | 5.3% | – |
| Drove alone to work | 81.8%±10.1 pts | 82.5% | – |
| Carpooled | 4.6%±3.4 pts | 7.0% | – |
| Public transportation | 0.0%±1.6 pts | 0.4% | – |
| Walked | 1.0%±2.0 pts | 1.0% | – |
| Worked from home | 12.6%±10.1 pts | 8.3% | – |
| Mean travel time to work | 23.9 min±3.8 | 26.1 min | −10.2 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Semmes?
No census tract lies mostly in Semmes; 10 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 63.07Mobile County | 3,583 | $67,140 |
| Tract 63.06Mobile County | 6,041 | $84,072 |
| Tract 61.02Mobile County | 3,067 | $56,667 |
| Tract 63.05Mobile County | 3,704 | $57,959 |
| Tract 34.10Mobile County | 4,110 | $63,750 |
| Tract 61.07Mobile County | 3,901 | $66,635 |
| Tract 34.09Mobile County | 2,837 | $80,476 |
| Tract 63.04Mobile County | 4,635 | $58,021 |
| Tract 61.04Mobile County | 4,715 | $71,130 |
| Tract 63.03Mobile County | 3,346 | $96,667 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Semmes) · Census block assignment files
How does Semmes compare with other places in Alabama?
By the Census Bureau's July 2025 estimates, Semmes is the 4,324th-most populous of the 19,476 U.S. incorporated places that have one and the 94th-most populous of 463 in Alabama.
Semmes ranks 117th of 305 places in Alabama with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 94th | 463 |
| Growth 2020-2025 (PEP) | 11th | 257 |
| Residents per square mile | 183rd | 311 |
| Median household income | 117th | 305 |
| Per capita income | 62nd | 311 |
| Median home value | 95th | 304 |
| Median gross rent | 78th | 274 |
| Poverty rate | 87th | 258 |
| Bachelor's degree or higher | 166th | 295 |
| Median age | 68th | 309 |
| Owner-occupied share | 157th | 310 |
| Travel time to work | 207th | 310 |
Semmes's figures with every place in Alabama (CSV)
Every place in Alabama, sortable · Compare Semmes with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Semmes?
21 of the 57 figures for Semmes on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Semmes are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Semmes.