City · Maine
Bath, Maine
Bath, city, in Sagadahoc County, Maine. Bath had 8,835 residents on July 1, 2025 by the Census Bureau's estimate, up 0.7% since 2020; the 2020 Census counted 8,766 and the ACS 2020-2024 5-year estimates put it at 8,815 (±16). GEOID 2303355.
Residents, July 2025 estimate
8,835
Census Bureau estimate (no margin published)
2020 Census count: 8,766 · ACS 2020-2024: 8,815 ±16
Median household income
$69,390
±$11,502 (90% margin)
Maine: $74,733
Median home value
$310,900
±$30,312 (90% margin)
Maine: $296,600
Median gross rent
$1,044
±$116 (90% margin)
Maine: $1,139
Where is Bath and what county is it in?
Bath is a city in Sagadahoc County, Maine. It covers 9.1 square miles of land, 961 residents per square mile in 2020.
Bath is in the Portland-South Portland, ME metropolitan statistical area, which takes in 3 counties (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 Bath, and is it growing?
The Census Bureau estimates that 8,835 people lived in Bath on July 1, 2025, up 0.7% since 2020, slower than Maine (+3.8%). The 2020 Census counted 8,766 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 8,815 (±16).
| Measure | Bath | Sagadahoc County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 8,815 ±16 | 37,285 | +496 |
| Households | 4,335 ±292 | 16,446 | +407 |
| Average household size | 2.00 ±0.14 | 2.25 | no clear change |
| Housing units | 4,796 ±303 | 19,239 | +401 |
Bath's population since 2000
From 9,266 in 2000 to 8,835 in 2025: down 4.7%. The 2000, 2010 and 2020 figures are census counts, each for Bath 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 Bath?
The median resident of Bath is 45.4 years old; 15.5% are under 18 and 25.2% are 65 or older. The largest group is non-Hispanic white residents at 92.6%, then non-Hispanic residents of two or more races at 4.7%. 2.1% of residents were born outside the United States.
| Measure | Bath | Sagadahoc County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 45.4 ±3.0 | 47.3 | +4.0 |
| Under 18 years | 15.5% ±3.3 pts | 17.6% | – |
| 65 years and over | 25.2% ±3.3 pts | 24.6% | – |
| Male | 46.0% ±2.9 pts | 49.0% | – |
| Hispanic or Latino (any race) | 0.8% ±1.0 pts | 2.0% | – |
| White alone, not Hispanic | 92.6% ±2.2 pts | 92.0% | no clear change |
| Black or African American alone, not Hispanic | 0.5% ±0.6 pts | 0.5% | – |
| Asian alone, not Hispanic | 0.8% ±0.5 pts | 0.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.1 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.7% ±1.7 pts | 4.4% | – |
| Some other race alone, not Hispanic | 0.6% ±0.7 pts | 0.4% | – |
| Born outside the United States | 2.1% ±1.3 pts | 2.5% | −3.5 pts |
| Speak a language other than English at home (age 5+) | 1.7% ±1.3 pts | 2.8% | – |
| Civilian veterans (age 18+) | 9.7% ±2.7 pts | 10.7% | – |
| With a disability | 12.6% ±2.9 pts | 13.7% | – |
| No health insurance coverage | 7.5% ±3.5 pts | 5.3% | no clear change |
| High school graduate or higher (age 25+) | 96.5% ±1.6 pts | 95.7% | – |
| Bachelor's degree or higher (age 25+) | 42.5% ±4.6 pts | 44.2% | no clear change |
| Graduate or professional degree (age 25+) | 15.8% ±3.4 pts | 17.9% | – |
| Lived in the same house a year earlier | 84.2% ±4.2 pts | 88.8% | – |
| Moved from another state in the past year | 5.0% ±2.8 pts | 4.2% | – |
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 Bath earn?
Half of Bath's 4,335 households earn less than $69,390 a year (±$11,502), against $87,806 in Sagadahoc County and $74,733 in Maine. In 2015-2019 it was $59,383 in 2024 dollars; the margins of error cannot tell the two periods apart. 12.4% of residents live below the poverty line.
| Measure | Bath | Sagadahoc County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $69,390 ±$11,502 | $87,806 | no clear change |
| Mean household income | $92,244 ±$10,198 | $107,102 | – |
| Per capita income | $44,655 ±$5,003 | $47,808 | +$7,847 |
| People below the poverty line | 12.4% ±4.1 pts | 10.0% | no clear change |
| Children under 18 below the poverty line | 12.9% ±13.8 pts | 10.3% | – |
| Households receiving SNAP | 10.6% ±4.5 pts | 8.7% | – |
| Households with a computer | 97.4% ±1.5 pts | 96.7% | – |
| Households with a broadband subscription | 92.5% ±3.4 pts | 93.9% | – |
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 Bath?
Owners occupy 64.3% of Bath's occupied homes and renters 35.7%. The median owner-occupied home is valued at $310,900 by its owner (±$30,312). The median renter pays $1,044 a month including utilities, and 35.3% of renters pay 35% or more of their income on rent.
| Measure | Bath | Sagadahoc County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $310,900 ±$30,312 | $333,300 | +$94,667 |
| Median gross rent | $1,044 ±$116 | $1,098 | no clear change |
| Renters paying 35% or more of income on rent | 35.3% ±12.8 pts | 32.8% | no clear change |
| Median monthly owner costs, with a mortgage | $1,835 ±$149 | $1,817 | – |
| Owner-occupied homes | 64.3% ±4.3 pts | 77.8% | +7.3 pts |
| Renter-occupied homes | 35.7% ±4.3 pts | 22.2% | – |
| Housing units | 4,796 ±303 | 19,239 | +401 |
| Homeowner vacancy rate | 2.3% ±3.0 pts | 0.5% | – |
| Rental vacancy rate | 7.7% ±5.8 pts | 5.5% | – |
| Single-family detached homes | 59.7% ±5.6 pts | 75.4% | – |
| Mobile homes | 0.3% ±0.5 pts | 7.7% | – |
| Built 2020 or later | 1.1% ±1.3 pts | 1.1% | – |
| Built 2010 to 2019 | 5.5% ±3.1 pts | 7.8% | – |
| Built 1939 or earlier | 57.5% ±6.2 pts | 27.1% | – |
| Households with no vehicle | 7.3% ±3.5 pts | 5.1% | – |
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 Bath building?
Builders took permits for 104 new housing units in Bath in 2025 (6 in single-family houses), 11.8 per 1,000 residents against 4.9 across Maine.
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 Bath work and get to work?
63.4% of Bath's workers drive alone and 19.3% work from home. The average trip to work takes 24.0 minutes. The unemployment rate in 2020-2024 averaged 5.8%.
| Measure | Bath | Sagadahoc County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 63.7% ±4.3 pts | 62.7% | – |
| Unemployment rate | 5.8% ±3.3 pts | 4.6% | – |
| Drove alone to work | 63.4% ±6.3 pts | 71.2% | – |
| Carpooled | 7.5% ±2.8 pts | 7.6% | – |
| Public transportation | 0.0% ±0.6 pts | 0.3% | – |
| Walked | 9.3% ±3.3 pts | 2.8% | – |
| Worked from home | 19.3% ±6.2 pts | 16.9% | +11.4 pts |
| Mean travel time to work | 24.0 min ±3.5 | 25.8 min | no clear change |
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 Bath?
2 census tracts lie mostly in Bath (2020 census blocks). Their median household incomes run from $67,824 (Tract 9706) to $71,711 (Tract 9705).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9705Sagadahoc County | 5,669 | $71,711 |
| Tract 9706Sagadahoc County | 3,146 | $67,824 |
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 Bath) · Census block assignment files
How does Bath compare with other places in Maine?
By the Census Bureau's July 2025 estimates, Bath is the 3,503rd-most populous of the 19,476 U.S. incorporated places that have one and the 14th-most populous of 23 in Maine.
Bath ranks 185th of 349 places in Maine with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 14th | 23 |
| Growth 2020-2025 (PEP) | 219th | 273 |
| Residents per square mile | 25th | 353 |
| Median household income | 185th | 349 |
| Per capita income | 119th | 353 |
| Median home value | 119th | 352 |
| Median gross rent | 153rd | 301 |
| Poverty rate | 120th | 277 |
| Bachelor's degree or higher | 88th | 352 |
| Median age | 196th | 353 |
| Owner-occupied share | 306th | 353 |
| Work from home | 83rd | 275 |
| Travel time to work | 200th | 352 |
Bath's figures with every place in Maine (CSV)
Every place in Maine, sortable · Compare Bath 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 Bath?
12 of the 57 figures for Bath 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 Bath 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 Bath.