Census tract · Sonoma County
Census Tract 1538.09, Sonoma County, California
Census Tract 1538.09, GEOID 06097153809, in Sonoma County, California, mostly within Windsor (88% of its census blocks). 5,074 residents in the ACS 2020-2024 5-year estimates (±589); the 2020 Census counted 4,510.
Residents, 2020-2024
5,074
±589 (90% margin)
2020 Census count: 4,510
Median household income
$132,500
±$41,077 (90% margin)
Sonoma County: $104,674
Median home value
$830,800
±$35,452 (90% margin)
Sonoma County: $815,500
Median gross rent
$1,459
±$688 (90% margin)
Sonoma County: $2,158
Where is Census Tract 1538.09?
Census Tract 1538.09 is one of 122 census tracts in Sonoma County, California. It covers 1.58 square miles of land, 2,856 residents per square mile in 2020. Its GEOID, 06097153809, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Windsor | 88% |
| Larkfield-Wikiup | 2% |
3 census tracts border Census Tract 1538.09: Tract 1527.01 ($90,000), Tract 1538.07 ($144,063) and Tract 1538.08 ($75,798). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 1538.09?
The 2020-2024 American Community Survey puts Census Tract 1538.09's population at 5,074 (±589) in 1,628 households; the 2020 Census counted 4,510 residents and 1,642 housing units.
| Measure | Tract 1538.09 | Windsor |
|---|---|---|
| Total population | 5,074 ±589 | 26,081 |
| Households | 1,628 ±147 | 9,192 |
| Average household size | 3.08 ±0.24 | 2.82 |
| Housing units | 1,636 ±147 | 9,650 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 1538.09?
The median resident of Census Tract 1538.09 is 40.9 years old; 24.8% are under 18 and 14.8% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 49.3%, then non-Hispanic white residents at 44.2%. 16.6% of residents were born outside the United States.
| Measure | Tract 1538.09 | Windsor |
|---|---|---|
| Median age | 40.9 ±6.3 | 42.7 |
| Under 18 years | 24.8% ±4.9 pts | 22.4% |
| 65 years and over | 14.8% ±3.7 pts | 17.5% |
| Hispanic or Latino (any race) | 49.3% ±6.5 pts | 32.9% |
| White alone, not Hispanic | 44.2% ±7.2 pts | 58.6% |
| Black or African American alone, not Hispanic | 0.4% ±0.7 pts | 1.4% |
| Asian alone, not Hispanic | 0.6% ±0.9 pts | 1.7% |
| American Indian and Alaska Native alone, not Hispanic | 2.5% ±3.5 pts | 1.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.3% ±0.5 pts | 0.1% |
| Two or more races, not Hispanic | 1.2% ±0.9 pts | 3.6% |
| Some other race alone, not Hispanic | 1.4% ±2.0 pts | 0.6% |
| Born outside the United States | 16.6% ±4.6 pts | 14.2% |
| Speak a language other than English at home (age 5+) | 37.6% ±8.8 pts | 29.0% |
| Civilian veterans (age 18+) | 5.3% ±2.3 pts | 5.5% |
| With a disability | 10.6% ±2.9 pts | 11.2% |
| No health insurance coverage | 3.9% ±2.9 pts | 4.9% |
| High school graduate or higher (age 25+) | 82.2% ±4.8 pts | 87.6% |
| Bachelor's degree or higher (age 25+) | 36.8% ±8.2 pts | 36.3% |
| Graduate or professional degree (age 25+) | 11.9% ±4.4 pts | 12.2% |
| Lived in the same house a year earlier | 92.2% ±4.7 pts | 91.2% |
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 Census Tract 1538.09 earn?
Half of the 1,628 households in Census Tract 1538.09 earn less than $132,500 a year (±$41,077), against $104,674 across Sonoma County: 22nd highest of the county's 121 tracts with a reliable estimate. 4.0% of residents live below the poverty line.
| Measure | Tract 1538.09 | Windsor |
|---|---|---|
| Median household income | $132,500 ±$41,077 | $133,979 |
| Mean household income | $146,985 ±$17,180 | $155,637 |
| Per capita income | $48,288 ±$5,560 | $55,802 |
| People below the poverty line | 4.0% ±1.6 pts | 5.9% |
| Children under 18 below the poverty line | 1.8% ±2.2 pts | 2.5% |
| Households receiving SNAP | 7.1% ±5.0 pts | 5.8% |
| Households with a computer | 97.4% ±2.8 pts | 95.7% |
| Households with a broadband subscription | 94.0% ±3.5 pts | 94.3% |
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 Census Tract 1538.09?
Owners occupy 72.6% of Census Tract 1538.09's occupied homes and renters 27.4%. The median owner-occupied home is valued at $830,800 by its owner (±$35,452). The median renter pays $1,459 a month including utilities, and 36.2% of renters pay 35% or more of their income on rent.
| Measure | Tract 1538.09 | Windsor |
|---|---|---|
| Median home value (owner-occupied) | $830,800 ±$35,452 | $801,100 |
| Median gross rent | $1,459 ±$688 | $2,433 |
| Renters paying 35% or more of income on rent | 36.2% ±22.7 pts | 45.5% |
| Median monthly owner costs, with a mortgage | $3,161 ±$475 | $3,136 |
| Owner-occupied homes | 72.6% ±7.9 pts | 75.6% |
| Renter-occupied homes | 27.4% ±7.9 pts | 24.4% |
| Housing units | 1,636 ±147 | 9,650 |
| Single-family detached homes | 74.1% ±7.6 pts | 76.7% |
| Mobile homes | 10.5% ±3.7 pts | 5.2% |
| Built 2020 or later | 0.4% ±0.5 pts | 0.8% |
| Built 2010 to 2019 | 2.2% ±1.7 pts | 1.5% |
| Built 1939 or earlier | 0.7% ±0.8 pts | 0.8% |
| Households with no vehicle | 2.6% ±2.8 pts | 4.5% |
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 Census Tract 1538.09 get to work?
82.9% of Census Tract 1538.09's workers drive alone and 9.9% work from home. The average trip to work takes 27.4 minutes.
| Measure | Tract 1538.09 | Windsor |
|---|---|---|
| In the labor force (age 16+) | 69.8% ±4.7 pts | 65.5% |
| Unemployment rate | 1.8% ±1.4 pts | 3.6% |
| Drove alone to work | 82.9% ±6.2 pts | 77.5% |
| Carpooled | 5.2% ±3.2 pts | 8.0% |
| Public transportation | 1.3% ±2.2 pts | 0.4% |
| Walked | 0.0% ±1.7 pts | 1.0% |
| Worked from home | 9.9% ±4.2 pts | 11.9% |
| Mean travel time to work | 27.4 min ±4.6 | 22.7 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
How does Census Tract 1538.09 compare with the other tracts in Sonoma County?
Among Sonoma County's tracts with a reliable estimate, Census Tract 1538.09 ranks as shown below (1 = highest).
| Measure | In Sonoma County | In Windsor |
|---|---|---|
| Population | 27th of 121 | 1st of 7 |
| Residents per square mile | 55th of 121 | 4th of 7 |
| Median household income | 22nd of 121 | 5th of 7 |
| Per capita income | 93rd of 121 | 6th of 7 |
| Median home value | 54th of 121 | 4th of 7 |
| Median gross rent | 109th of 115 | 7th of 7 |
| Poverty rate | 76th of 84 | 5th of 6 |
| Bachelor's degree or higher | 72nd of 121 | 4th of 7 |
| Median age | 80th of 121 | 5th of 7 |
| Owner-occupied share | 41st of 120 | 4th of 7 |
The tracts next to it on Sonoma County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 1518 | 19th | $138,117±$11,615 · within the margin of this tract |
| Tract 1513.07 | 20th | $135,380±$34,491 · within the margin of this tract |
| Tract 1506.12 | 21st | $135,240±$33,543 · within the margin of this tract |
| Tract 1538.09 | 22nd | $132,500±$41,077 |
| Tract 1529.06 | 23rd | $132,132±$41,351 · within the margin of this tract |
| Tract 1525.01 | 24th | $131,855±$18,251 · within the margin of this tract |
| Tract 1529.04 | 25th | $131,688±$18,648 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 1538.09?
2 of the 18 figures for Census Tract 1538.09 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.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). 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 · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections