Census tract · San Diego County
Census Tract 188.03, San Diego County, California
Census Tract 188.03, GEOID 06073018803, in San Diego County, California, mostly within Bonsall (73% of its census blocks). 4,724 residents in the ACS 2020-2024 5-year estimates (±690); the 2020 Census counted 5,056.
Residents, 2020-2024
4,724
±690 (90% margin)
2020 Census count: 5,056
Median household income
$104,866
±$16,944 (90% margin)
San Diego County: $106,268
Median home value
$914,600
±$68,974 (90% margin)
San Diego County: $854,700
Median gross rent
$2,179
±$374 (90% margin)
San Diego County: $2,246
Where is Census Tract 188.03?
Census Tract 188.03 is one of 737 census tracts in San Diego County, California. It covers 18.36 square miles of land, 275 residents per square mile in 2020. Its GEOID, 06073018803, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Bonsall | 73% |
9 census tracts border Census Tract 188.03: Tract 186.12 ($149,107), Tract 186.19 ($150,918), Tract 188.04 ($124,911), Tract 188.05 ($125,871), Tract 190.02 ($139,412), Tract 191.03 ($121,601), Tract 191.09 ($145,221), Tract 192.08 ($107,375) and Tract 192.09 ($140,417). 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 188.03?
The 2020-2024 American Community Survey puts Census Tract 188.03's population at 4,724 (±690) in 1,879 households; the 2020 Census counted 5,056 residents and 2,070 housing units.
| Measure | Tract 188.03 | Bonsall |
|---|---|---|
| Total population | 4,724±690 | 4,332 |
| Households | 1,879±180 | 1,638 |
| Average household size | 2.51±0.30 | 2.63 |
| Housing units | 2,013±171 | 1,772 |
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 188.03?
The median resident of Census Tract 188.03 is 47.7 years old; 21.1% are under 18 and 29.8% are 65 or older. The largest group is non-Hispanic white residents at 63.2%, then Hispanic or Latino residents (of any race) at 28.6%. 18.4% of residents were born outside the United States.
| Measure | Tract 188.03 | Bonsall |
|---|---|---|
| Median age | 47.7±8.0 | 44.0 |
| Under 18 years | 21.1%±8.6 pts | 23.0% |
| 65 years and over | 29.8%±8.1 pts | 26.0% |
| Hispanic or Latino (any race) | 28.6%±11.8 pts | 30.6% |
| White alone, not Hispanic | 63.2%±11.0 pts | 60.4% |
| Black or African American alone, not Hispanic | 0.9%±1.4 pts | 1.0% |
| Asian alone, not Hispanic | 2.5%±1.4 pts | 2.7% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.9 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.9 pts | 0.0% |
| Two or more races, not Hispanic | 4.8%±2.5 pts | 5.3% |
| Some other race alone, not Hispanic | 0.0%±0.9 pts | 0.0% |
| Born outside the United States | 18.4%±3.9 pts | 19.6% |
| Speak a language other than English at home (age 5+) | 34.6%±10.8 pts | 37.8% |
| Civilian veterans (age 18+) | 8.3%±2.2 pts | 7.8% |
| With a disability | 7.9%±2.8 pts | 6.3% |
| No health insurance coverage | 8.9%±6.5 pts | 9.7% |
| High school graduate or higher (age 25+) | 90.1%±4.6 pts | 89.5% |
| Bachelor's degree or higher (age 25+) | 46.4%±5.9 pts | 48.1% |
| Graduate or professional degree (age 25+) | 18.5%±5.0 pts | 18.7% |
| Lived in the same house a year earlier | 86.7%±6.8 pts | 86.1% |
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 188.03 earn?
Half of the 1,879 households in Census Tract 188.03 earn less than $104,866 a year (±$16,944), against $106,268 across San Diego County: 400th highest of the county's 725 tracts with a reliable estimate. 17.2% of residents live below the poverty line.
| Measure | Tract 188.03 | Bonsall |
|---|---|---|
| Median household income | $104,866±$16,944 | $113,537 |
| Mean household income | $154,404±$23,036 | $166,102 |
| Per capita income | $62,482±$11,390 | $63,881 |
| People below the poverty line | 17.2%±10.7 pts | 16.9% |
| Children under 18 below the poverty line | 37.9%±28.0 pts | 37.9% |
| Households receiving SNAP | 10.9%±5.7 pts | 12.1% |
| Households with a computer | 99.1%±1.0 pts | 99.0% |
| Households with a broadband subscription | 98.2%±1.4 pts | 98.4% |
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 Census Tract 188.03?
Owners occupy 68.2% of Census Tract 188.03's occupied homes and renters 31.8%. The median owner-occupied home is valued at $914,600 by its owner (±$68,974). The median renter pays $2,179 a month including utilities, and 54.0% of renters pay 35% or more of their income on rent.
| Measure | Tract 188.03 | Bonsall |
|---|---|---|
| Median home value (owner-occupied) | $914,600±$68,974 | $958,700 |
| Median gross rent | $2,179±$374 | $2,336 |
| Renters paying 35% or more of income on rent | 54.0%±17.2 pts | 48.6% |
| Median monthly owner costs, with a mortgage | $3,333±$418 | $3,500 |
| Owner-occupied homes | 68.2%±7.5 pts | 68.8% |
| Renter-occupied homes | 31.8%±7.5 pts | 31.2% |
| Housing units | 2,013±171 | 1,772 |
| Single-family detached homes | 63.5%±7.8 pts | 69.2% |
| Mobile homes | 11.0%±4.5 pts | 2.2% |
| Built 2020 or later | 5.2%±3.0 pts | 5.4% |
| Built 2010 to 2019 | 6.6%±3.6 pts | 4.7% |
| Built 1939 or earlier | 0.8%±0.9 pts | 1.0% |
| Households with no vehicle | 3.7%±2.9 pts | 1.1% |
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 188.03 get to work?
74.3% of Census Tract 188.03's workers drive alone and 20.4% work from home. The average trip to work takes 30.9 minutes.
| Measure | Tract 188.03 | Bonsall |
|---|---|---|
| In the labor force (age 16+) | 51.3%±6.2 pts | 54.1% |
| Unemployment rate | 4.4%±3.1 pts | 4.7% |
| Drove alone to work | 74.3%±8.1 pts | 74.4% |
| Carpooled | 3.1%±3.0 pts | 3.3% |
| Public transportation | 0.0%±2.4 pts | 0.0% |
| Walked | 0.5%±0.8 pts | 0.5% |
| Worked from home | 20.4%±8.0 pts | 20.7% |
| Mean travel time to work | 30.9 min±3.2 | 31.1 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 188.03 compare with the other tracts in San Diego County?
Among San Diego County's tracts with a reliable estimate, Census Tract 188.03 ranks as shown below (1 = highest).
| Measure | In San Diego County |
|---|---|
| Population | 285th of 735 |
| Residents per square mile | 710th of 736 |
| Median household income | 400th of 725 |
| Per capita income | 227th of 734 |
| Median home value | 243rd of 703 |
| Median gross rent | 432nd of 703 |
| Poverty rate | 111th of 472 |
| Bachelor's degree or higher | 326th of 732 |
| Median age | 73rd of 735 |
| Owner-occupied share | 274th of 708 |
The tracts next to it on San Diego County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 73.03 | 397th | $105,398±$11,659 · within the margin of this tract |
| Tract 98.02 | 398th | $105,000±$25,709 · within the margin of this tract |
| Tract 56.02 | 399th | $104,896±$30,253 · within the margin of this tract |
| Tract 188.03 | 400th | $104,866±$16,944 |
| Tract 166.18 | 401st | $104,833±$25,147 · within the margin of this tract |
| Tract 74.01 | 402nd | $104,722±$44,886 · within the margin of this tract |
| Tract 204.04 | 403rd | $104,609±$14,528 · 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 188.03?
1 of the 18 figures for Census Tract 188.03 on this page carries a coefficient of variation over 40% and is 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