Town · Maine
Knox, Maine
Knox, town, in Waldo County, Maine. Knox had 811 residents on July 1, 2025 by the Census Bureau's estimate, up 0.2% since 2020; the 2020 Census counted 811 and the ACS 2020-2024 5-year estimates put it at 825 (±157). GEOID 2302737585.
Residents, July 2025 estimate
811
Census Bureau estimate (no margin published)
2020 Census count: 811 · ACS 2020-2024: 825 ±157
Median household income
$64,821
±$8,723 (90% margin)
Maine: $74,733
Median home value
$159,600
±$26,420 (90% margin)
Maine: $296,600
Median gross rent
$1,375
±$47 (90% margin)
Maine: $1,139
Where is Knox and what county is it in?
Knox is a town in Waldo County, Maine. It covers 29.0 square miles of land, 28 residents per square mile in 2020.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Knox, and is it growing?
The Census Bureau estimates that 811 people lived in Knox on July 1, 2025, up 0.2% since 2020, slower than Maine (+3.8%). The 2020 Census counted 811 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 825 (±157).
| Measure | Knox | Waldo County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 825±157 | 40,192 | no clear change |
| Households | 351±69 | 17,470 | no clear change |
| Average household size | 2.35±0.26 | 2.25 | no clear change |
| Housing units | 401±70 | 22,252 | no clear change |
Knox's population since 2000
From 747 in 2000 to 811 in 2025: up 8.6%. The 2000, 2010 and 2020 figures are census counts, each for Knox 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 Knox?
The median resident of Knox is 41.1 years old; 13.9% are under 18 and 17.3% are 65 or older. The largest group is non-Hispanic white residents at 97.1%, then non-Hispanic residents of two or more races at 1.9%.
| Measure | Knox | Waldo County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.1±7.9 | 47.4 | no clear change |
| Under 18 years | 13.9%±6.3 pts | 17.7% | – |
| 65 years and over | 17.3%±4.6 pts | 25.1% | – |
| Male | 51.4%±4.2 pts | 49.6% | – |
| Hispanic or Latino (any race) | 1.0%±1.6 pts | 1.6% | – |
| White alone, not Hispanic | 97.1%±2.1 pts | 92.8% | no clear change |
| Black or African American alone, not Hispanic | 0.0%±3.3 pts | 0.4% | – |
| Asian alone, not Hispanic | 0.0%±3.3 pts | 0.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±3.3 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±3.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.9%±1.8 pts | 4.0% | – |
| Some other race alone, not Hispanic | 0.0%±3.3 pts | 0.6% | – |
| Born outside the United States | 0.2%±0.4 pts | 2.3% | – |
| Speak a language other than English at home (age 5+) | 1.4%±1.3 pts | 4.4% | – |
| Civilian veterans (age 18+) | 12.0%±4.9 pts | 7.6% | – |
| With a disability | 17.6%±6.0 pts | 16.8% | – |
| No health insurance coverage | 5.5%±3.1 pts | 9.2% | −7.9 pts |
| High school graduate or higher (age 25+) | 93.0%±4.1 pts | 93.6% | – |
| Bachelor's degree or higher (age 25+) | 26.0%±7.4 pts | 34.4% | no clear change |
| Graduate or professional degree (age 25+) | 4.8%±3.0 pts | 14.4% | – |
| Lived in the same house a year earlier | 94.0%±3.6 pts | 91.3% | – |
| Moved from another state in the past year | 2.9%±2.3 pts | 2.4% | – |
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 Knox earn?
Half of Knox's 351 households earn less than $64,821 a year (±$8,723), against $72,782 in Waldo County and $74,733 in Maine. In 2015-2019 it was $59,083 in 2024 dollars; the margins of error cannot tell the two periods apart. 8.6% of residents live below the poverty line.
| Measure | Knox | Waldo County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $64,821±$8,723 | $72,782 | no clear change |
| Mean household income | $78,519±$10,628 | $91,541 | – |
| Per capita income | $34,782±$4,779 | $40,336 | +$10,649 |
| People below the poverty line | 8.6%±3.9 pts | 12.0% | −9.6 pts |
| Children under 18 below the poverty line | 2.8%±7.0 pts | 15.1% | – |
| Households receiving SNAP | 12.5%±5.3 pts | 12.5% | – |
| Households with a computer | 99.4%±0.8 pts | 93.9% | – |
| Households with a broadband subscription | 91.7%±5.0 pts | 89.5% | – |
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 Knox?
Owners occupy 80.1% of Knox's occupied homes and renters 19.9%. The median owner-occupied home is valued at $159,600 by its owner (±$26,420). The median renter pays $1,375 a month including utilities.
| Measure | Knox | Waldo County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $159,600±$26,420 | $257,700 | no clear change |
| Median gross rent | $1,375±$47 | $1,021 | +$355 |
| Renters paying 35% or more of income on rent | 11.3%±16.8 pts | 33.5% | – |
| Median monthly owner costs, with a mortgage | $1,542±$194 | $1,542 | – |
| Owner-occupied homes | 80.1%±10.5 pts | 81.9% | no clear change |
| Renter-occupied homes | 19.9%±10.5 pts | 18.1% | – |
| Housing units | 401±70 | 22,252 | no clear change |
| Homeowner vacancy rate | 0.0%±9.3 pts | 0.4% | – |
| Rental vacancy rate | 9.1%±12.9 pts | 7.7% | – |
| Single-family detached homes | 72.6%±9.4 pts | 75.0% | – |
| Mobile homes | 24.2%±9.0 pts | 13.1% | – |
| Built 2020 or later | 3.2%±3.3 pts | 2.0% | – |
| Built 2010 to 2019 | 8.7%±5.6 pts | 8.3% | – |
| Built 1939 or earlier | 14.5%±6.5 pts | 21.6% | – |
| Households with no vehicle | 2.6%±2.4 pts | 5.8% | – |
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 Knox building?
Builders took permits for 0 new housing units in Knox in 2025 (0 in single-family houses), 0.0 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 Knox work and get to work?
73.2% of Knox's workers drive alone and 12.3% work from home. The average trip to work takes 29.9 minutes.
| Measure | Knox | Waldo County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 65.5%±6.7 pts | 58.1% | – |
| Unemployment rate | 1.1%±1.6 pts | 3.7% | – |
| Drove alone to work | 73.2%±10.1 pts | 72.0% | – |
| Carpooled | 10.2%±6.2 pts | 7.8% | – |
| Public transportation | 0.0%±5.7 pts | 0.5% | – |
| Walked | 3.8%±3.3 pts | 3.3% | – |
| Worked from home | 12.3%±7.7 pts | 15.6% | – |
| Mean travel time to work | 29.9 min±5.6 | 26.6 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 Knox?
No census tract lies mostly in Knox; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 450Waldo County | 6,137 | $71,340 |
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 Knox) · Census block assignment files
How does Knox compare with other places in Maine?
By the Census Bureau's July 2025 estimates, Knox is the 8,455th-most populous of the 16,079 U.S. towns and townships that have one and the 279th-most populous of 454 in Maine.
Knox is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 279th | 454 |
Knox's figures with every place in Maine (CSV)
Every place in Maine, sortable · Compare Knox 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 Knox?
19 of the 57 figures for Knox 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 Knox 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' school search.