City · Washington
Monroe, Washington
Monroe, city, in Snohomish County, Washington. Monroe had 20,025 residents on July 1, 2025 by the Census Bureau's estimate, up 1.0% since 2020; the 2020 Census counted 19,699 and the ACS 2020-2024 5-year estimates put it at 19,755 (±43). GEOID 5346685.
Residents, July 2025 estimate
20,025
Census Bureau estimate (no margin published)
2020 Census count: 19,699 · ACS 2020-2024: 19,755 ±43
Median household income
$110,461
±$6,509 (90% margin)
Washington: $98,141
Median home value
$668,400
±$22,248 (90% margin)
Washington: $564,600
Median gross rent
$1,950
±$175 (90% margin)
Washington: $1,760
Where is Monroe and what county is it in?
Monroe is a city in Snohomish County, Washington. It covers 6.4 square miles of land, 3,090 residents per square mile in 2020.
Monroe is in the Seattle-Tacoma-Bellevue, WA 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 Monroe, and is it growing?
The Census Bureau estimates that 20,025 people lived in Monroe on July 1, 2025, up 1.0% since 2020, slower than Washington (+3.8%). The 2020 Census counted 19,699 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 19,755 (±43).
| Measure | Monroe | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 19,755 ±43 | 844,430 | +890 |
| Households | 6,280 ±295 | 316,212 | +1,014 |
| Average household size | 2.75 ±0.13 | 2.64 | −0.20 |
| Housing units | 6,367 ±302 | 331,530 | +930 |
Monroe's population since 2000
From 13,795 in 2000 to 20,025 in 2025: up 45.2%. The 2000, 2010 and 2020 figures are census counts, each for Monroe 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 Monroe?
The median resident of Monroe is 35.7 years old; 21.4% are under 18 and 10.5% are 65 or older. The largest group is non-Hispanic white residents at 63.4%, then Hispanic or Latino residents (of any race) at 17.6%. 16.5% of residents were born outside the United States.
| Measure | Monroe | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 35.7 ±1.3 | 38.6 | +1.7 |
| Under 18 years | 21.4% ±1.8 pts | 22.1% | – |
| 65 years and over | 10.5% ±1.4 pts | 14.8% | – |
| Male | 55.6% ±1.7 pts | 50.4% | – |
| Hispanic or Latino (any race) | 17.6% ±2.4 pts | 12.1% | no clear change |
| White alone, not Hispanic | 63.4% ±4.1 pts | 62.0% | no clear change |
| Black or African American alone, not Hispanic | 3.2% ±0.9 pts | 3.6% | no clear change |
| Asian alone, not Hispanic | 9.5% ±2.6 pts | 13.6% | +6.9 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.6% ±0.4 pts | 0.6% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.1% ±0.1 pts | 0.5% | – |
| Two or more races, not Hispanic | 5.1% ±1.6 pts | 6.9% | – |
| Some other race alone, not Hispanic | 0.4% ±0.4 pts | 0.7% | – |
| Born outside the United States | 16.5% ±3.1 pts | 19.3% | +5.4 pts |
| Speak a language other than English at home (age 5+) | 22.4% ±3.4 pts | 24.4% | – |
| Civilian veterans (age 18+) | 7.1% ±1.4 pts | 6.9% | – |
| With a disability | 12.8% ±2.2 pts | 12.4% | – |
| No health insurance coverage | 6.2% ±1.8 pts | 6.2% | no clear change |
| High school graduate or higher (age 25+) | 91.3% ±1.6 pts | 93.1% | – |
| Bachelor's degree or higher (age 25+) | 30.0% ±4.0 pts | 38.2% | +7.9 pts |
| Graduate or professional degree (age 25+) | 9.3% ±2.2 pts | 13.4% | – |
| Lived in the same house a year earlier | 82.5% ±3.9 pts | 87.3% | – |
| Moved from another state in the past year | 1.9% ±1.0 pts | 1.8% | – |
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 Monroe earn?
Half of Monroe's 6,280 households earn less than $110,461 a year (±$6,509), against $111,246 in Snohomish County and $98,141 in Washington. In 2015-2019 it was $105,712 in 2024 dollars; the margins of error cannot tell the two periods apart. 7.3% of residents live below the poverty line.
| Measure | Monroe | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $110,461 ±$6,509 | $111,246 | no clear change |
| Mean household income | $131,597 ±$10,256 | $142,821 | – |
| Per capita income | $43,626 ±$3,522 | $54,628 | +$8,178 |
| People below the poverty line | 7.3% ±2.2 pts | 8.0% | no clear change |
| Children under 18 below the poverty line | 9.4% ±4.8 pts | 9.2% | no clear change |
| Households receiving SNAP | 7.2% ±2.0 pts | 8.8% | – |
| Households with a computer | 98.6% ±0.8 pts | 97.7% | – |
| Households with a broadband subscription | 94.9% ±2.3 pts | 94.4% | – |
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 Monroe?
Owners occupy 71.5% of Monroe's occupied homes and renters 28.5%. The median owner-occupied home is valued at $668,400 by its owner (±$22,248). The median renter pays $1,950 a month including utilities, and 43.6% of renters pay 35% or more of their income on rent.
| Measure | Monroe | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $668,400 ±$22,248 | $696,000 | +$229,042 |
| Median gross rent | $1,950 ±$175 | $1,949 | no clear change |
| Renters paying 35% or more of income on rent | 43.6% ±7.1 pts | 41.9% | no clear change |
| Median monthly owner costs, with a mortgage | $2,601 ±$122 | $2,748 | – |
| Owner-occupied homes | 71.5% ±3.8 pts | 68.2% | +7.0 pts |
| Renter-occupied homes | 28.5% ±3.8 pts | 31.8% | – |
| Housing units | 6,367 ±302 | 331,530 | +930 |
| Homeowner vacancy rate | 0.0% ±0.9 pts | 0.5% | – |
| Rental vacancy rate | 0.8% ±1.6 pts | 4.0% | – |
| Single-family detached homes | 70.9% ±3.7 pts | 63.9% | – |
| Mobile homes | 0.4% ±0.4 pts | 4.6% | – |
| Built 2020 or later | 7.0% ±2.0 pts | 2.6% | – |
| Built 2010 to 2019 | 14.9% ±3.1 pts | 12.2% | – |
| Built 1939 or earlier | 8.8% ±2.4 pts | 4.9% | – |
| Households with no vehicle | 3.6% ±1.6 pts | 4.7% | – |
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 Monroe building?
Builders took permits for 83 new housing units in Monroe in 2025 (83 in single-family houses), 4.1 per 1,000 residents against 4.4 across Washington.
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 Monroe work and get to work?
68.2% of Monroe's workers drive alone and 20.4% work from home. The average trip to work takes 31.3 minutes. The unemployment rate in 2020-2024 averaged 5.7%.
| Measure | Monroe | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 60.2% ±2.6 pts | 67.3% | – |
| Unemployment rate | 5.7% ±2.1 pts | 4.5% | no clear change |
| Drove alone to work | 68.2% ±3.5 pts | 65.0% | – |
| Carpooled | 7.9% ±1.8 pts | 9.1% | – |
| Public transportation | 0.8% ±0.7 pts | 2.8% | – |
| Walked | 1.9% ±0.8 pts | 1.6% | – |
| Worked from home | 20.4% ±3.6 pts | 20.0% | +14.8 pts |
| Mean travel time to work | 31.3 min ±1.8 | 30.8 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 Monroe?
5 census tracts lie mostly in Monroe, and 2 more reach into it (2020 census blocks). Their median household incomes run from $75,645 (Tract 522.11) to $163,867 (Tract 522.03).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 522.03Snohomish County | 7,586 | $163,867 |
| Tract 522.04Snohomish County | 4,718 | $106,412 |
| Tract 522.08Snohomish County | 4,301 | $84,577 |
| Tract 522.10Snohomish County | 2,346 | $92,750 |
| Tract 522.11Snohomish County | 2,839 | $75,645 |
| Tract 522.07Snohomish County | 6,474 | $157,167 |
| Tract 522.06Snohomish County | 5,487 | $161,875 |
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 Monroe) · Census block assignment files
How does Monroe compare with other places in Washington?
By the Census Bureau's July 2025 estimates, Monroe is the 1,940th-most populous of the 19,476 U.S. incorporated places that have one and the 59th-most populous of 281 in Washington.
Monroe ranks 125th of 387 places in Washington with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 59th | 281 |
| Growth 2020-2025 (PEP) | 140th | 203 |
| Residents per square mile | 84th | 394 |
| Median household income | 125th | 387 |
| Per capita income | 212th | 393 |
| Median home value | 104th | 384 |
| Median gross rent | 101st | 351 |
| Poverty rate | 187th | 281 |
| Bachelor's degree or higher | 185th | 382 |
| Median age | 292nd | 394 |
| Owner-occupied share | 209th | 388 |
| Work from home | 111th | 307 |
| Travel time to work | 106th | 394 |
Monroe's figures with every place in Washington (CSV)
Every place in Washington, sortable · Compare Monroe 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 Monroe?
7 of the 57 figures for Monroe 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 Monroe 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 Monroe.