Census-designated place · Florida
San Castle, Florida
San Castle, census-designated place, in Palm Beach County, Florida. San Castle had 3,755 residents in the 2020 Census, a full count; the ACS 2020-2024 5-year estimates put it at 3,052 (±708). GEOID 1263435.
Residents, 2020 Census
3,755
Census count or controlled total
ACS 2020-2024 estimate: 3,052 ±708
Median household income
$57,228
±$26,993 (90% margin)
Florida: $74,568
Median home value
$303,900
±$66,966 (90% margin)
Florida: $359,000
Median gross rent
$1,596
±$526 (90% margin)
Florida: $1,669
Where is San Castle and what county is it in?
San Castle is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Palm Beach County, Florida. It covers 0.4 square miles of land, 8,940 residents per square mile in 2020.
San Castle is in the Miami-Fort Lauderdale-West Palm Beach, FL 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 San Castle, and is it growing?
The 2020 Census counted 3,755 residents in San Castle, a full count rather than a sample. The 2020-2024 American Community Survey, a sample, estimates 3,052 (±708).
The Census Bureau publishes yearly population estimates for incorporated places only; San Castle is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | San Castle | Palm Beach County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,052 ±708 | 1,533,806 | no clear change |
| Households | 975 ±218 | 605,430 | no clear change |
| Average household size | 3.11 ±0.40 | 2.49 | no clear change |
| Housing units | 1,061 ±218 | 719,463 | no clear change |
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 San Castle?
The median resident of San Castle is 36.4 years old; 23.4% are under 18 and 13.2% are 65 or older. The largest group is non-Hispanic Black residents at 32.0%, then non-Hispanic white residents at 31.7%. 25.0% of residents were born outside the United States.
| Measure | San Castle | Palm Beach County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 36.4 ±9.4 | 45.3 | no clear change |
| Under 18 years | 23.4% ±8.3 pts | 18.8% | – |
| 65 years and over | 13.2% ±4.6 pts | 24.8% | – |
| Male | 55.5% ±6.5 pts | 48.8% | – |
| Hispanic or Latino (any race) | 30.9% ±10.0 pts | 24.4% | no clear change |
| White alone, not Hispanic | 31.7% ±13.8 pts | 49.6% | no clear change |
| Black or African American alone, not Hispanic | 32.0% ±17.3 pts | 18.1% | no clear change |
| Asian alone, not Hispanic | 3.7% ±5.4 pts | 2.8% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.7 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.7 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.7% ±2.0 pts | 4.1% | – |
| Some other race alone, not Hispanic | 0.0% ±1.7 pts | 0.9% | – |
| Born outside the United States | 25.0% ±9.2 pts | 27.7% | −19.9 pts |
| Speak a language other than English at home (age 5+) | 38.3% ±11.9 pts | 34.2% | – |
| Civilian veterans (age 18+) | 1.6% ±1.6 pts | 5.1% | – |
| With a disability | 8.8% ±3.6 pts | 12.3% | – |
| No health insurance coverage | 31.4% ±8.9 pts | 13.2% | no clear change |
| High school graduate or higher (age 25+) | 68.8% ±9.9 pts | 89.2% | – |
| Bachelor's degree or higher (age 25+) | 17.6% ±8.5 pts | 40.5% | no clear change |
| Graduate or professional degree (age 25+) | 3.2% ±3.4 pts | 16.0% | – |
| Lived in the same house a year earlier | 94.7% ±5.0 pts | 87.8% | – |
| Moved from another state in the past year | 1.9% ±2.2 pts | 2.5% | – |
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 San Castle earn?
Half of San Castle's 975 households earn less than $57,228 a year (±$26,993), against $83,581 in Palm Beach County and $74,568 in Florida. In 2015-2019 it was $47,580 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | San Castle | Palm Beach County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $57,228 ±$26,993 | $83,581 | no clear change |
| Mean household income | $88,225 ±$40,554 | $128,577 | – |
| Per capita income | $29,230 ±$12,465 | $52,359 | no clear change |
| People below the poverty line | 19.0% ±13.2 pts | 11.3% | – |
| Children under 18 below the poverty line | 30.5% ±30.8 pts | 15.4% | – |
| Households receiving SNAP | 23.3% ±13.5 pts | 10.0% | – |
| Households with a computer | 93.3% ±9.2 pts | 96.8% | – |
| Households with a broadband subscription | 67.5% ±12.7 pts | 91.4% | – |
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 San Castle?
Owners occupy 64.3% of San Castle's occupied homes and renters 35.7%. The median owner-occupied home is valued at $303,900 by its owner (±$66,966). The median renter pays $1,596 a month including utilities, and 89.1% of renters pay 35% or more of their income on rent.
| Measure | San Castle | Palm Beach County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $303,900 ±$66,966 | $447,300 | +$154,125 |
| Median gross rent | $1,596 ±$526 | $1,916 | no clear change |
| Renters paying 35% or more of income on rent | 89.1% ±16.8 pts | 52.9% | +27.8 pts |
| Median monthly owner costs, with a mortgage | $1,711 ±$285 | $2,383 | – |
| Owner-occupied homes | 64.3% ±14.4 pts | 70.1% | +18.8 pts |
| Renter-occupied homes | 35.7% ±14.4 pts | 29.9% | – |
| Housing units | 1,061 ±218 | 719,463 | no clear change |
| Homeowner vacancy rate | 0.0% ±8.0 pts | 1.5% | – |
| Rental vacancy rate | 0.0% ±14.0 pts | 7.3% | – |
| Single-family detached homes | 77.0% ±10.2 pts | 45.5% | – |
| Mobile homes | 0.0% ±4.8 pts | 2.8% | – |
| Built 2020 or later | 0.0% ±4.8 pts | 1.8% | – |
| Built 2010 to 2019 | 0.0% ±4.8 pts | 7.4% | – |
| Built 1939 or earlier | 0.0% ±4.8 pts | 1.7% | – |
| Households with no vehicle | 9.3% ±7.1 pts | 6.0% | – |
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 San Castle work and get to work?
58.4% of San Castle's workers drive alone. The average trip to work takes 28.8 minutes.
| Measure | San Castle | Palm Beach County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 67.7% ±9.8 pts | 59.6% | – |
| Unemployment rate | 8.6% ±7.0 pts | 5.5% | – |
| Drove alone to work | 58.4% ±16.4 pts | 69.5% | – |
| Carpooled | 20.9% ±13.2 pts | 9.9% | – |
| Public transportation | 5.6% ±4.7 pts | 1.5% | – |
| Walked | 0.0% ±3.5 pts | 1.2% | – |
| Worked from home | 3.7% ±4.5 pts | 15.4% | – |
| Mean travel time to work | 28.8 min ±4.7 | 26.5 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 San Castle?
1 census tract lies mostly in San Castle (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 56.01Palm Beach County | 6,170 | $54,985 |
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 San Castle) · Census block assignment files
How does San Castle compare with other places in Florida?
San Castle ranks 569th of 754 places in Florida with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 596th | 766 |
| Residents per square mile | 22nd | 770 |
| Median household income | 569th | 754 |
| Per capita income | 576th | 763 |
| Median home value | 447th | 749 |
| Median gross rent | 364th | 710 |
| Bachelor's degree or higher | 595th | 733 |
| Median age | 635th | 762 |
| Owner-occupied share | 510th | 760 |
| Travel time to work | 297th | 764 |
San Castle's figures with every place in Florida (CSV)
Every place in Florida, sortable · Compare San Castle 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 San Castle?
21 of the 57 figures for San Castle 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 San Castle 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' school search.