Census tract · San Diego County
Census Tract 31.08, San Diego County, California
Census Tract 31.08, GEOID 06073003108, in San Diego County, California, entirely within La Presa. 3,447 residents in the ACS 2020-2024 5-year estimates (±342); the 2020 Census counted 3,454.
Residents, 2020-2024
3,447
±342 (90% margin)
2020 Census count: 3,454
Median household income
$101,914
±$23,989 (90% margin)
San Diego County: $106,268
Median home value
$616,700
±$35,075 (90% margin)
San Diego County: $854,700
Median gross rent
$2,194
±$547 (90% margin)
San Diego County: $2,246
Where is Census Tract 31.08?
Census Tract 31.08 is one of 737 census tracts in San Diego County, California. It covers 0.42 square miles of land, 8,243 residents per square mile in 2020. Its GEOID, 06073003108, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| La Presa | 100% |
5 census tracts border Census Tract 31.08: Tract 31.07 ($109,970), Tract 32.14 ($75,474), Tract 139.03 ($116,488), Tract 139.08 ($118,259) and Tract 140.02 ($78,430). 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 31.08?
The 2020-2024 American Community Survey puts Census Tract 31.08's population at 3,447 (±342) in 1,001 households; the 2020 Census counted 3,454 residents and 986 housing units.
| Measure | Tract 31.08 | La Presa |
|---|---|---|
| Total population | 3,447±342 | 34,962 |
| Households | 1,001±122 | 10,971 |
| Average household size | 3.43±0.30 | 3.16 |
| Housing units | 1,030±122 | 11,288 |
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 31.08?
The median resident of Census Tract 31.08 is 35.1 years old; 24.0% are under 18 and 12.9% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 57.8%, then non-Hispanic white residents at 16.7%. 20.7% of residents were born outside the United States.
| Measure | Tract 31.08 | La Presa |
|---|---|---|
| Median age | 35.1±2.4 | 36.3 |
| Under 18 years | 24.0%±3.8 pts | 22.9% |
| 65 years and over | 12.9%±3.8 pts | 15.1% |
| Hispanic or Latino (any race) | 57.8%±6.1 pts | 50.3% |
| White alone, not Hispanic | 16.7%±5.8 pts | 23.5% |
| Black or African American alone, not Hispanic | 11.6%±5.5 pts | 11.4% |
| Asian alone, not Hispanic | 7.8%±4.1 pts | 9.3% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.2 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 2.3%±2.6 pts | 0.3% |
| Two or more races, not Hispanic | 2.4%±1.5 pts | 4.0% |
| Some other race alone, not Hispanic | 1.3%±1.4 pts | 1.1% |
| Born outside the United States | 20.7%±5.4 pts | 22.9% |
| Speak a language other than English at home (age 5+) | 49.7%±6.7 pts | 44.4% |
| Civilian veterans (age 18+) | 10.4%±3.7 pts | 10.3% |
| With a disability | 9.9%±2.7 pts | 13.0% |
| No health insurance coverage | 4.0%±1.8 pts | 7.0% |
| High school graduate or higher (age 25+) | 83.9%±5.3 pts | 85.5% |
| Bachelor's degree or higher (age 25+) | 20.8%±4.7 pts | 25.1% |
| Graduate or professional degree (age 25+) | 4.4%±2.1 pts | 8.3% |
| Lived in the same house a year earlier | 94.5%±3.2 pts | 91.7% |
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 31.08 earn?
Half of the 1,001 households in Census Tract 31.08 earn less than $101,914 a year (±$23,989), against $106,268 across San Diego County: 422nd highest of the county's 725 tracts with a reliable estimate. 8.8% of residents live below the poverty line.
| Measure | Tract 31.08 | La Presa |
|---|---|---|
| Median household income | $101,914±$23,989 | $93,479 |
| Mean household income | $110,518±$10,652 | $118,422 |
| Per capita income | $33,826±$3,689 | $38,402 |
| People below the poverty line | 8.8%±3.6 pts | 9.9% |
| Children under 18 below the poverty line | 16.1%±7.4 pts | 11.6% |
| Households receiving SNAP | 14.4%±5.5 pts | 17.0% |
| Households with a computer | 94.4%±4.2 pts | 94.8% |
| Households with a broadband subscription | 87.3%±5.3 pts | 89.9% |
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 31.08?
Owners occupy 83.5% of Census Tract 31.08's occupied homes and renters 16.5%. The median owner-occupied home is valued at $616,700 by its owner (±$35,075). The median renter pays $2,194 a month including utilities, and 66.7% of renters pay 35% or more of their income on rent.
| Measure | Tract 31.08 | La Presa |
|---|---|---|
| Median home value (owner-occupied) | $616,700±$35,075 | $629,700 |
| Median gross rent | $2,194±$547 | $1,852 |
| Renters paying 35% or more of income on rent | 66.7%±23.6 pts | 46.5% |
| Median monthly owner costs, with a mortgage | $2,456±$212 | $2,684 |
| Owner-occupied homes | 83.5%±6.3 pts | 67.0% |
| Renter-occupied homes | 16.5%±6.3 pts | 33.0% |
| Housing units | 1,030±122 | 11,288 |
| Single-family detached homes | 90.8%±4.9 pts | 64.8% |
| Mobile homes | 1.1%±1.2 pts | 7.6% |
| Built 2020 or later | 0.0%±4.0 pts | 0.1% |
| Built 2010 to 2019 | 0.0%±4.0 pts | 1.2% |
| Built 1939 or earlier | 0.0%±4.0 pts | 1.0% |
| Households with no vehicle | 3.4%±2.6 pts | 5.2% |
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 31.08 get to work?
74.3% of Census Tract 31.08's workers drive alone and 10.7% work from home. The average trip to work takes 27.2 minutes. The unemployment rate in 2020-2024 averaged 7.9%.
| Measure | Tract 31.08 | La Presa |
|---|---|---|
| In the labor force (age 16+) | 66.7%±5.6 pts | 64.9% |
| Unemployment rate | 7.9%±3.4 pts | 8.0% |
| Drove alone to work | 74.3%±7.7 pts | 75.9% |
| Carpooled | 8.3%±4.5 pts | 10.2% |
| Public transportation | 3.3%±3.4 pts | 1.0% |
| Walked | 0.0%±2.6 pts | 1.0% |
| Worked from home | 10.7%±3.5 pts | 9.7% |
| Mean travel time to work | 27.2 min±4.2 | 26.9 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 31.08 compare with the other tracts in San Diego County?
Among San Diego County's tracts with a reliable estimate, Census Tract 31.08 ranks as shown below (1 = highest).
| Measure | In San Diego County | In La Presa |
|---|---|---|
| Population | 527th of 735 | 8th of 8 |
| Residents per square mile | 265th of 736 | 4th of 8 |
| Median household income | 422nd of 725 | 5th of 8 |
| Per capita income | 577th of 734 | 7th of 8 |
| Median home value | 584th of 703 | 5th of 8 |
| Median gross rent | 420th of 703 | 3rd of 7 |
| Poverty rate | 273rd of 472 | 4th of 6 |
| Bachelor's degree or higher | 594th of 732 | 6th of 8 |
| Median age | 519th of 735 | 6th of 8 |
| Owner-occupied share | 113th of 708 | 3rd of 8 |
The tracts next to it on San Diego County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 98.05 | 419th | $102,202±$12,602 · within the margin of this tract |
| Tract 133.08 | 420th | $101,979±$23,686 · within the margin of this tract |
| Tract 83.60 | 421st | $101,963±$7,979 · within the margin of this tract |
| Tract 31.08 | 422nd | $101,914±$23,989 |
| Tract 173.08 | 423rd | $101,833±$60,857 · within the margin of this tract |
| Tract 31.15 | 424th | $101,813±$20,276 · within the margin of this tract |
| Tract 100.12 | 425th | $101,771±$22,252 · 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 31.08?
Every figure for Census Tract 31.08 on this page has a coefficient of variation under 40%, the Census Bureau's threshold for a usable estimate.
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