City · Maine
Gardiner, Maine
Gardiner, city, in Kennebec County, Maine. Gardiner had 6,206 residents on July 1, 2025 by the Census Bureau's estimate, up 4.1% since 2020; the 2020 Census counted 5,961 and the ACS 2020-2024 5-year estimates put it at 6,088 (±21). GEOID 2327085.
Residents, July 2025 estimate
6,206
Census Bureau estimate (no margin published)
2020 Census count: 5,961 · ACS 2020-2024: 6,088 ±21
Median household income
$71,782
±$10,317 (90% margin)
Maine: $74,733
Median home value
$221,600
±$19,237 (90% margin)
Maine: $296,600
Median gross rent
$1,113
±$191 (90% margin)
Maine: $1,139
Where is Gardiner and what county is it in?
Gardiner is a city in Kennebec County, Maine. It covers 15.7 square miles of land, 380 residents per square mile in 2020.
Gardiner is in the Augusta-Waterville, ME micropolitan 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 Gardiner, and is it growing?
The Census Bureau estimates that 6,206 people lived in Gardiner on July 1, 2025, up 4.1% since 2020, in line with Maine (+3.8%). The 2020 Census counted 5,961 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 6,088 (±21).
| Measure | Gardiner | Kennebec County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 6,088 ±21 | 126,808 | +431 |
| Households | 2,730 ±226 | 54,312 | +329 |
| Average household size | 2.21 ±0.18 | 2.25 | no clear change |
| Housing units | 3,083 ±263 | 63,521 | +452 |
Gardiner's population since 2000
From 6,198 in 2000 to 6,206 in 2025: up 0.1%. The 2000, 2010 and 2020 figures are census counts, each for Gardiner 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 Gardiner?
The median resident of Gardiner is 42.0 years old; 16.6% are under 18 and 19.7% are 65 or older. The largest group is non-Hispanic white residents at 88.0%, then non-Hispanic residents of two or more races at 5.0%. 4.0% of residents were born outside the United States.
| Measure | Gardiner | Kennebec County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.0 ±3.6 | 43.7 | no clear change |
| Under 18 years | 16.6% ±3.5 pts | 18.7% | – |
| 65 years and over | 19.7% ±3.5 pts | 21.1% | – |
| Male | 52.7% ±3.7 pts | 48.9% | – |
| Hispanic or Latino (any race) | 3.3% ±2.4 pts | 2.3% | – |
| White alone, not Hispanic | 88.0% ±3.9 pts | 91.8% | −7.2 pts |
| Black or African American alone, not Hispanic | 1.5% ±1.4 pts | 0.9% | – |
| Asian alone, not Hispanic | 0.9% ±1.0 pts | 0.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.4 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.4 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.0% ±2.5 pts | 3.7% | – |
| Some other race alone, not Hispanic | 1.4% ±1.5 pts | 0.4% | – |
| Born outside the United States | 4.0% ±2.0 pts | 2.4% | no clear change |
| Speak a language other than English at home (age 5+) | 6.4% ±3.1 pts | 4.8% | – |
| Civilian veterans (age 18+) | 12.5% ±3.9 pts | 9.5% | – |
| With a disability | 16.4% ±3.8 pts | 16.9% | – |
| No health insurance coverage | 7.2% ±2.5 pts | 5.8% | no clear change |
| High school graduate or higher (age 25+) | 95.1% ±2.3 pts | 94.8% | – |
| Bachelor's degree or higher (age 25+) | 29.8% ±6.2 pts | 31.9% | no clear change |
| Graduate or professional degree (age 25+) | 7.5% ±3.2 pts | 12.2% | – |
| Lived in the same house a year earlier | 89.1% ±4.9 pts | 88.0% | – |
| Moved from another state in the past year | 1.5% ±1.1 pts | 1.9% | – |
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 Gardiner earn?
Half of Gardiner's 2,730 households earn less than $71,782 a year (±$10,317), against $69,077 in Kennebec County and $74,733 in Maine. In 2015-2019 it was $61,076 in 2024 dollars; the margins of error cannot tell the two periods apart. 10.5% of residents live below the poverty line.
| Measure | Gardiner | Kennebec County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $71,782 ±$10,317 | $69,077 | no clear change |
| Mean household income | $84,319 ±$8,249 | $88,742 | – |
| Per capita income | $38,973 ±$3,945 | $38,597 | no clear change |
| People below the poverty line | 10.5% ±3.9 pts | 11.6% | −7.0 pts |
| Children under 18 below the poverty line | 14.2% ±13.3 pts | 15.1% | – |
| Households receiving SNAP | 14.2% ±4.5 pts | 13.6% | – |
| Households with a computer | 96.0% ±2.8 pts | 95.0% | – |
| Households with a broadband subscription | 94.8% ±3.4 pts | 91.1% | – |
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 Gardiner?
Owners occupy 68.2% of Gardiner's occupied homes and renters 31.8%. The median owner-occupied home is valued at $221,600 by its owner (±$19,237). The median renter pays $1,113 a month including utilities, and 40.5% of renters pay 35% or more of their income on rent.
| Measure | Gardiner | Kennebec County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $221,600 ±$19,237 | $238,200 | +$48,441 |
| Median gross rent | $1,113 ±$191 | $992 | +$211 |
| Renters paying 35% or more of income on rent | 40.5% ±15.9 pts | 38.5% | no clear change |
| Median monthly owner costs, with a mortgage | $1,612 ±$110 | $1,499 | – |
| Owner-occupied homes | 68.2% ±7.0 pts | 73.7% | no clear change |
| Renter-occupied homes | 31.8% ±7.0 pts | 26.3% | – |
| Housing units | 3,083 ±263 | 63,521 | +452 |
| Homeowner vacancy rate | 5.7% ±4.7 pts | 0.9% | – |
| Rental vacancy rate | 5.7% ±6.8 pts | 1.8% | – |
| Single-family detached homes | 61.0% ±6.0 pts | 67.7% | – |
| Mobile homes | 5.4% ±2.9 pts | 9.9% | – |
| Built 2020 or later | 0.3% ±0.4 pts | 1.0% | – |
| Built 2010 to 2019 | 5.1% ±3.7 pts | 5.7% | – |
| Built 1939 or earlier | 47.4% ±6.8 pts | 22.5% | – |
| Households with no vehicle | 9.0% ±4.7 pts | 7.5% | – |
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 Gardiner building?
Builders took permits for 57 new housing units in Gardiner in 2025 (17 in single-family houses), 9.2 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 Gardiner work and get to work?
73.4% of Gardiner's workers drive alone and 13.9% work from home. The average trip to work takes 30.1 minutes.
| Measure | Gardiner | Kennebec County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 64.3% ±5.8 pts | 60.1% | – |
| Unemployment rate | 7.5% ±6.0 pts | 3.9% | – |
| Drove alone to work | 73.4% ±5.4 pts | 73.7% | – |
| Carpooled | 6.6% ±2.4 pts | 6.8% | – |
| Public transportation | 1.2% ±1.4 pts | 0.2% | – |
| Walked | 4.0% ±3.2 pts | 2.4% | – |
| Worked from home | 13.9% ±4.1 pts | 15.3% | +10.2 pts |
| Mean travel time to work | 30.1 min ±4.0 | 25.4 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 Gardiner?
2 census tracts lie mostly in Gardiner (2020 census blocks). Their median household incomes run from $44,837 (Tract 109) to $85,797 (Tract 110).
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 Gardiner) · Census block assignment files
How does Gardiner compare with other places in Maine?
By the Census Bureau's July 2025 estimates, Gardiner is the 4,341st-most populous of the 19,476 U.S. incorporated places that have one and the 20th-most populous of 23 in Maine.
Gardiner ranks 172nd 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 | 20th | 23 |
| Growth 2020-2025 (PEP) | 116th | 273 |
| Residents per square mile | 88th | 353 |
| Median household income | 172nd | 349 |
| Per capita income | 185th | 353 |
| Median home value | 225th | 352 |
| Median gross rent | 120th | 301 |
| Poverty rate | 148th | 277 |
| Bachelor's degree or higher | 177th | 352 |
| Median age | 263rd | 353 |
| Owner-occupied share | 286th | 353 |
| Work from home | 153rd | 275 |
| Travel time to work | 90th | 352 |
Gardiner's figures with every place in Maine (CSV)
Every place in Maine, sortable · Compare Gardiner 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 Gardiner?
15 of the 57 figures for Gardiner 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 Gardiner 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 Gardiner.