Census-designated place · Maryland
Kemp Mill, Maryland
Kemp Mill, census-designated place, in Montgomery County, Maryland. Kemp Mill had 13,042 people in the ACS 2020-2024 5-year estimates (±1,306). GEOID 2443200.
Residents, 2020-2024
13,042
±1,306 (90% margin)
2020 Census count: 13,378
Median household income
$146,354
±$18,566 (90% margin)
Maryland: $103,678
Median home value
$596,600
±$19,564 (90% margin)
Maryland: $419,900
Median gross rent
$2,177
±$163 (90% margin)
Maryland: $1,705
Where is Kemp Mill and what county is it in?
Kemp Mill is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Montgomery County, Maryland. It covers 2.5 square miles of land, 5,332 residents per square mile in 2020.
Kemp Mill is in the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan statistical area, which takes in 23 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 Kemp Mill, and is it growing?
The 2020-2024 American Community Survey puts Kemp Mill's population at 13,042 (±1,306). The 2020 Census counted 13,378 residents.
The Census Bureau publishes yearly population estimates for incorporated places only; Kemp Mill is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Kemp Mill | Montgomery County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 13,042 ±1,306 | 1,065,949 | −1,691 |
| Households | 4,477 ±452 | 389,210 | no clear change |
| Average household size | 2.87 ±0.19 | 2.72 | −0.28 |
| Housing units | 4,831 ±490 | 406,531 | no clear change |
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 Kemp Mill?
The median resident of Kemp Mill is 39.0 years old; 25.7% are under 18 and 16.2% are 65 or older. The largest group is non-Hispanic white residents at 56.8%, then Hispanic or Latino residents (of any race) at 15.9%. 23.6% of residents were born outside the United States.
| Measure | Kemp Mill | Montgomery County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 39.0 ±1.8 | 40.2 | no clear change |
| Under 18 years | 25.7% ±3.1 pts | 22.8% | – |
| 65 years and over | 16.2% ±2.0 pts | 17.0% | – |
| Male | 50.1% ±3.1 pts | 48.7% | – |
| Hispanic or Latino (any race) | 15.9% ±3.9 pts | 21.0% | no clear change |
| White alone, not Hispanic | 56.8% ±5.8 pts | 39.5% | no clear change |
| Black or African American alone, not Hispanic | 14.2% ±4.3 pts | 18.3% | −8.3 pts |
| Asian alone, not Hispanic | 4.9% ±1.6 pts | 15.3% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.5% ±2.2 pts | 4.8% | – |
| Some other race alone, not Hispanic | 2.6% ±1.9 pts | 1.0% | – |
| Born outside the United States | 23.6% ±5.2 pts | 33.6% | −7.8 pts |
| Speak a language other than English at home (age 5+) | 29.3% ±4.7 pts | 43.0% | – |
| Civilian veterans (age 18+) | 3.3% ±1.1 pts | 4.2% | – |
| With a disability | 8.4% ±1.7 pts | 9.4% | – |
| No health insurance coverage | 8.2% ±3.3 pts | 7.0% | no clear change |
| High school graduate or higher (age 25+) | 93.5% ±2.5 pts | 91.3% | – |
| Bachelor's degree or higher (age 25+) | 64.8% ±4.7 pts | 60.6% | +9.5 pts |
| Graduate or professional degree (age 25+) | 41.0% ±5.0 pts | 33.4% | – |
| Lived in the same house a year earlier | 90.4% ±3.5 pts | 88.1% | – |
| Moved from another state in the past year | 0.8% ±0.6 pts | 3.2% | – |
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 Kemp Mill earn?
Half of Kemp Mill's 4,477 households earn less than $146,354 a year (±$18,566), against $132,450 in Montgomery County and $103,678 in Maryland. In 2015-2019 it was $143,428 in 2024 dollars; the margins of error cannot tell the two periods apart. 10.5% of residents live below the poverty line.
| Measure | Kemp Mill | Montgomery County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $146,354 ±$18,566 | $132,450 | no clear change |
| Mean household income | $179,810 ±$18,791 | $181,376 | – |
| Per capita income | $63,405 ±$5,153 | $67,571 | +$7,545 |
| People below the poverty line | 10.5% ±4.3 pts | 7.5% | +7.3 pts |
| Children under 18 below the poverty line | 15.7% ±9.3 pts | 9.0% | – |
| Households receiving SNAP | 6.3% ±3.8 pts | 7.4% | – |
| Households with a computer | 98.7% ±0.8 pts | 98.2% | – |
| Households with a broadband subscription | 97.0% ±1.2 pts | 95.7% | – |
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 Kemp Mill?
Owners occupy 83.9% of Kemp Mill's occupied homes and renters 16.1%. The median owner-occupied home is valued at $596,600 by its owner (±$19,564). The median renter pays $2,177 a month including utilities, and 44.5% of renters pay 35% or more of their income on rent.
| Measure | Kemp Mill | Montgomery County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $596,600 ±$19,564 | $640,300 | +$73,924 |
| Median gross rent | $2,177 ±$163 | $2,068 | −$371 |
| Renters paying 35% or more of income on rent | 44.5% ±22.4 pts | 41.9% | no clear change |
| Median monthly owner costs, with a mortgage | $2,718 ±$165 | $2,929 | – |
| Owner-occupied homes | 83.9% ±5.6 pts | 65.3% | no clear change |
| Renter-occupied homes | 16.1% ±5.6 pts | 34.7% | – |
| Housing units | 4,831 ±490 | 406,531 | no clear change |
| Homeowner vacancy rate | 1.3% ±2.2 pts | 0.7% | – |
| Rental vacancy rate | 9.9% ±10.8 pts | 3.7% | – |
| Single-family detached homes | 75.9% ±4.7 pts | 46.6% | – |
| Mobile homes | 0.3% ±0.4 pts | 0.2% | – |
| Built 2020 or later | 0.2% ±0.3 pts | 1.3% | – |
| Built 2010 to 2019 | 0.3% ±0.4 pts | 8.8% | – |
| Built 1939 or earlier | 1.7% ±1.0 pts | 4.2% | – |
| Households with no vehicle | 4.5% ±2.2 pts | 8.5% | – |
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 do people in Kemp Mill work and get to work?
57.1% of Kemp Mill's workers drive alone and 28.6% work from home. The average trip to work takes 31.2 minutes. The unemployment rate in 2020-2024 averaged 7.1%.
| Measure | Kemp Mill | Montgomery County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 70.8% ±2.8 pts | 69.8% | – |
| Unemployment rate | 7.1% ±2.9 pts | 4.9% | no clear change |
| Drove alone to work | 57.1% ±4.1 pts | 52.8% | – |
| Carpooled | 7.1% ±2.4 pts | 7.6% | – |
| Public transportation | 5.0% ±1.8 pts | 7.5% | – |
| Walked | 1.0% ±0.8 pts | 1.7% | – |
| Worked from home | 28.6% ±4.2 pts | 28.3% | +20.7 pts |
| Mean travel time to work | 31.2 min ±1.7 | 31.9 min | −7.0 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 Kemp Mill?
2 census tracts lie mostly in Kemp Mill, and 4 more reach into it (2020 census blocks). Their median household incomes run from $177,731 (Tract 7031) to $190,481 (Tract 7032.08).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 7032.08Montgomery County | 5,277 | $190,481 |
| Tract 7031Montgomery County | 4,875 | $177,731 |
| Tract 7032.10Montgomery County | 3,791 | $164,821 |
| Tract 7032.07Montgomery County | 6,169 | $100,362 |
| Tract 7032.09Montgomery County | 6,088 | $85,230 |
| Tract 7030Montgomery County | 1,783 | $175,250 |
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 Kemp Mill) · Census block assignment files
How does Kemp Mill compare with other places in Maryland?
Kemp Mill ranks 79th of 322 places in Maryland with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 114th | 326 |
| Residents per square mile | 46th | 326 |
| Median household income | 79th | 322 |
| Per capita income | 71st | 326 |
| Median home value | 53rd | 323 |
| Median gross rent | 71st | 288 |
| Poverty rate | 89th | 230 |
| Bachelor's degree or higher | 37th | 325 |
| Median age | 185th | 326 |
| Owner-occupied share | 111th | 323 |
| Work from home | 45th | 293 |
| Travel time to work | 170th | 325 |
Kemp Mill's figures with every place in Maryland (CSV)
Every place in Maryland, sortable · Compare Kemp Mill 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 Kemp Mill?
10 of the 57 figures for Kemp Mill 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 Kemp Mill 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.