Census tract · San Joaquin County
Census Tract 51.31, San Joaquin County, California
Census Tract 51.31, GEOID 06077005131, in San Joaquin County, California, partly within Stockton and Manteca. 6,967 residents in the ACS 2020-2024 5-year estimates (±880); the 2020 Census counted 7,255.
Residents, 2020-2024
6,967
±880 (90% margin)
2020 Census count: 7,255
Median household income
$92,500
±$22,399 (90% margin)
San Joaquin County: $92,179
Median home value
$636,800
±$83,360 (90% margin)
San Joaquin County: $530,700
Median gross rent
$1,414
±$317 (90% margin)
San Joaquin County: $1,734
Where is Census Tract 51.31?
Census Tract 51.31 is one of 174 census tracts in San Joaquin County, California. It covers 29.82 square miles of land, 243 residents per square mile in 2020. Its GEOID, 06077005131, names it uniquely (how tract numbers and GEOIDs work).
9 census tracts border Census Tract 51.31: Tract 37 ($64,115), Tract 38.03 ($98,542), Tract 49.06 ($81,676), Tract 50.03 ($154,983), Tract 51.26 ($74,848), Tract 51.35 ($119,592), Tract 51.38, Tract 51.39 ($133,750) and Tract 51.41 ($82,318). 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 51.31?
The 2020-2024 American Community Survey puts Census Tract 51.31's population at 6,967 (±880) in 1,342 households; the 2020 Census counted 7,255 residents and 1,302 housing units.
| Measure | Tract 51.31 | San Joaquin County |
|---|---|---|
| Total population | 6,967 ±880 | 797,334 |
| Households | 1,342 ±181 | 245,250 |
| Average household size | 3.25 ±0.31 | 3.19 |
| Housing units | 1,448 ±169 | 260,151 |
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 51.31?
The median resident of Census Tract 51.31 is 45.7 years old; 14.0% are under 18 and 16.9% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 37.7%, then non-Hispanic white residents at 36.0%. 20.4% of residents were born outside the United States.
| Measure | Tract 51.31 | San Joaquin County |
|---|---|---|
| Median age | 45.7 ±4.0 | 35.4 |
| Under 18 years | 14.0% ±3.4 pts | 26.2% |
| 65 years and over | 16.9% ±3.7 pts | 13.5% |
| Hispanic or Latino (any race) | 37.7% ±6.0 pts | 42.5% |
| White alone, not Hispanic | 36.0% ±5.6 pts | 26.8% |
| Black or African American alone, not Hispanic | 10.7% ±2.5 pts | 6.6% |
| Asian alone, not Hispanic | 9.2% ±6.6 pts | 18.2% |
| American Indian and Alaska Native alone, not Hispanic | 0.6% ±0.4 pts | 0.3% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.6 pts | 0.5% |
| Two or more races, not Hispanic | 4.2% ±2.9 pts | 4.6% |
| Some other race alone, not Hispanic | 1.6% ±1.2 pts | 0.5% |
| Born outside the United States | 20.4% ±5.7 pts | 25.2% |
| Speak a language other than English at home (age 5+) | 30.8% ±6.6 pts | 43.0% |
| Civilian veterans (age 18+) | 5.9% ±2.2 pts | 4.3% |
| With a disability | 15.7% ±6.2 pts | 12.6% |
| No health insurance coverage | 8.6% ±5.4 pts | 6.3% |
| High school graduate or higher (age 25+) | 73.4% ±5.9 pts | 80.9% |
| Bachelor's degree or higher (age 25+) | 10.0% ±3.0 pts | 22.7% |
| Graduate or professional degree (age 25+) | 5.2% ±2.5 pts | 7.3% |
| Lived in the same house a year earlier | 88.5% ±3.2 pts | 89.4% |
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 Census Tract 51.31 earn?
Half of the 1,342 households in Census Tract 51.31 earn less than $92,500 a year (±$22,399), against $92,179 across San Joaquin County: 78th highest of the county's 170 tracts with a reliable estimate.
| Measure | Tract 51.31 | San Joaquin County |
|---|---|---|
| Median household income | $92,500 ±$22,399 | $92,179 |
| Mean household income | $117,384 ±$18,228 | $117,604 |
| Per capita income | $24,429 ±$3,622 | $37,266 |
| People below the poverty line | 5.7% ±3.8 pts | 12.4% |
| Children under 18 below the poverty line | 0.0% ±4.5 pts | 16.4% |
| Households receiving SNAP | 11.1% ±7.5 pts | 15.6% |
| Households with a computer | 96.6% ±3.2 pts | 96.5% |
| Households with a broadband subscription | 90.4% ±8.0 pts | 92.5% |
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 Census Tract 51.31?
Owners occupy 74.0% of Census Tract 51.31's occupied homes and renters 26.0%. The median owner-occupied home is valued at $636,800 by its owner (±$83,360). The median renter pays $1,414 a month including utilities.
| Measure | Tract 51.31 | San Joaquin County |
|---|---|---|
| Median home value (owner-occupied) | $636,800 ±$83,360 | $530,700 |
| Median gross rent | $1,414 ±$317 | $1,734 |
| Renters paying 35% or more of income on rent | 29.3% ±27.1 pts | 43.8% |
| Median monthly owner costs, with a mortgage | $2,600 ±$310 | $2,494 |
| Owner-occupied homes | 74.0% ±10.8 pts | 62.0% |
| Renter-occupied homes | 26.0% ±10.8 pts | 38.0% |
| Housing units | 1,448 ±169 | 260,151 |
| Single-family detached homes | 76.2% ±7.3 pts | 74.6% |
| Mobile homes | 13.1% ±7.3 pts | 3.1% |
| Built 2020 or later | 4.0% ±6.1 pts | 2.8% |
| Built 2010 to 2019 | 2.6% ±2.8 pts | 8.1% |
| Built 1939 or earlier | 3.2% ±3.7 pts | 6.8% |
| Households with no vehicle | 0.9% ±1.6 pts | 5.1% |
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 51.31 get to work?
80.2% of Census Tract 51.31's workers drive alone. The average trip to work takes 32.4 minutes. The unemployment rate in 2020-2024 averaged 7.8%.
| Measure | Tract 51.31 | San Joaquin County |
|---|---|---|
| In the labor force (age 16+) | 39.8% ±6.7 pts | 62.0% |
| Unemployment rate | 7.8% ±4.9 pts | 7.6% |
| Drove alone to work | 80.2% ±7.0 pts | 73.7% |
| Carpooled | 11.4% ±4.5 pts | 12.3% |
| Public transportation | 4.1% ±3.9 pts | 0.9% |
| Walked | 0.0% ±1.9 pts | 1.2% |
| Worked from home | 4.3% ±3.4 pts | 10.6% |
| Mean travel time to work | 32.4 min ±7.1 | 34.1 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 51.31 compare with the other tracts in San Joaquin County?
Among San Joaquin County's tracts with a reliable estimate, Census Tract 51.31 ranks as shown below (1 = highest).
| Measure | In San Joaquin County |
|---|---|
| Population | 16th of 174 |
| Residents per square mile | 160th of 174 |
| Median household income | 78th of 170 |
| Per capita income | 141st of 173 |
| Median home value | 40th of 172 |
| Median gross rent | 132nd of 166 |
| Bachelor's degree or higher | 135th of 155 |
| Median age | 9th of 174 |
| Owner-occupied share | 45th of 170 |
The tracts next to it on San Joaquin County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 15.01 | 75th | $93,449±$16,986 · within the margin of this tract |
| Tract 33.11 | 76th | $93,031±$10,717 · within the margin of this tract |
| Tract 31.06 | 77th | $92,972±$17,287 · within the margin of this tract |
| Tract 51.31 | 78th | $92,500±$22,399 |
| Tract 35.01 | 79th | $91,720±$3,912 · within the margin of this tract |
| Tract 35.02 | 80th | $91,579±$50,898 · within the margin of this tract |
| Tract 47.01 | 81st | $91,379±$35,173 · 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 51.31?
3 of the 18 figures for Census Tract 51.31 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