Census tract · Alameda County
Census Tract 4415.21, Alameda County, California
Census Tract 4415.21, GEOID 06001441521, in Alameda County, California, entirely within Fremont. 5,937 residents in the ACS 2020-2024 5-year estimates (±616); the 2020 Census counted 5,779.
Residents, 2020-2024
5,937
±616 (90% margin)
2020 Census count: 5,779
Median household income
$199,254
±$27,801 (90% margin)
Alameda County: $129,367
Median home value
$1,389,300
±$56,604 (90% margin)
Alameda County: $1,090,100
Median gross rent
$3,500 or more
The survey's top or bottom value; no margin is published
Alameda County: $2,357
Where is Census Tract 4415.21?
Census Tract 4415.21 is one of 379 census tracts in Alameda County, California. It covers 0.63 square miles of land, 9,217 residents per square mile in 2020. Its GEOID, 06001441521, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Fremont | 100% |
6 census tracts border Census Tract 4415.21: Tract 4414.01 ($192,500), Tract 4415.01 ($230,417), Tract 4415.03 ($250,000 or more), Tract 4415.22 ($208,160), Tract 4415.23 ($184,936) and Tract 4415.24 ($250,000 or more). 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 4415.21?
The 2020-2024 American Community Survey puts Census Tract 4415.21's population at 5,937 (±616) in 1,884 households; the 2020 Census counted 5,779 residents and 1,806 housing units.
| Measure | Tract 4415.21 | Fremont |
|---|---|---|
| Total population | 5,937 ±616 | 228,295 |
| Households | 1,884 ±189 | 78,054 |
| Average household size | 3.15 ±0.16 | 2.90 |
| Housing units | 1,884 ±189 | 81,579 |
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 4415.21?
The median resident of Census Tract 4415.21 is 42.2 years old; 19.8% are under 18 and 18.7% are 65 or older. The largest group is non-Hispanic Asian residents at 70.6%, then non-Hispanic residents of two or more races at 11.8%. 56.0% of residents were born outside the United States.
| Measure | Tract 4415.21 | Fremont |
|---|---|---|
| Median age | 42.2 ±1.6 | 39.1 |
| Under 18 years | 19.8% ±1.7 pts | 22.3% |
| 65 years and over | 18.7% ±2.3 pts | 14.0% |
| Hispanic or Latino (any race) | 8.0% ±4.5 pts | 13.1% |
| White alone, not Hispanic | 8.3% ±3.1 pts | 15.7% |
| Black or African American alone, not Hispanic | 0.5% ±0.7 pts | 2.8% |
| Asian alone, not Hispanic | 70.6% ±6.1 pts | 63.7% |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.2 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.6% ±0.7 pts | 0.4% |
| Two or more races, not Hispanic | 11.8% ±7.4 pts | 3.7% |
| Some other race alone, not Hispanic | 0.0% ±0.7 pts | 0.4% |
| Born outside the United States | 56.0% ±3.7 pts | 51.1% |
| Speak a language other than English at home (age 5+) | 73.6% ±5.5 pts | 64.2% |
| Civilian veterans (age 18+) | 1.7% ±1.1 pts | 2.0% |
| With a disability | 6.0% ±2.8 pts | 6.9% |
| No health insurance coverage | 2.1% ±1.4 pts | 2.6% |
| High school graduate or higher (age 25+) | 91.9% ±3.3 pts | 93.0% |
| Bachelor's degree or higher (age 25+) | 62.6% ±5.3 pts | 63.9% |
| Graduate or professional degree (age 25+) | 32.3% ±5.2 pts | 31.4% |
| Lived in the same house a year earlier | 90.5% ±4.0 pts | 88.2% |
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 4415.21 earn?
Half of the 1,884 households in Census Tract 4415.21 earn less than $199,254 a year (±$27,801), against $129,367 across Alameda County: 64th highest of the county's 372 tracts with a reliable estimate. 9.6% of residents live below the poverty line.
| Measure | Tract 4415.21 | Fremont |
|---|---|---|
| Median household income | $199,254 ±$27,801 | $181,506 |
| Mean household income | $228,345 ±$23,765 | $221,930 |
| Per capita income | $70,825 ±$7,669 | $77,049 |
| People below the poverty line | 9.6% ±4.2 pts | 5.2% |
| Children under 18 below the poverty line | 11.0% ±6.3 pts | 4.5% |
| Households receiving SNAP | 5.1% ±3.2 pts | 4.2% |
| Households with a computer | 98.9% ±1.0 pts | 99.0% |
| Households with a broadband subscription | 91.6% ±7.2 pts | 96.8% |
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 4415.21?
Owners occupy 80.9% of Census Tract 4415.21's occupied homes and renters 19.1%. The median owner-occupied home is valued at $1,389,300 by its owner (±$56,604). The median renter pays $3,500 or more a month including utilities, and 48.5% of renters pay 35% or more of their income on rent.
| Measure | Tract 4415.21 | Fremont |
|---|---|---|
| Median home value (owner-occupied) | $1,389,300 ±$56,604 | $1,403,800 |
| Median gross rent | $3,500 or more | $2,933 |
| Renters paying 35% or more of income on rent | 48.5% ±15.0 pts | 35.6% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 80.9% ±5.5 pts | 60.8% |
| Renter-occupied homes | 19.1% ±5.5 pts | 39.2% |
| Housing units | 1,884 ±189 | 81,579 |
| Single-family detached homes | 86.5% ±4.2 pts | 56.3% |
| Mobile homes | 8.2% ±3.0 pts | 0.9% |
| Built 2020 or later | 0.0% ±2.2 pts | 2.7% |
| Built 2010 to 2019 | 0.3% ±0.6 pts | 6.2% |
| Built 1939 or earlier | 1.4% ±1.6 pts | 1.2% |
| Households with no vehicle | 2.4% ±2.0 pts | 4.7% |
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 4415.21 get to work?
51.5% of Census Tract 4415.21's workers drive alone and 29.0% work from home. The average trip to work takes 35.0 minutes. The unemployment rate in 2020-2024 averaged 5.9%.
| Measure | Tract 4415.21 | Fremont |
|---|---|---|
| In the labor force (age 16+) | 62.2% ±4.6 pts | 67.9% |
| Unemployment rate | 5.9% ±3.7 pts | 4.7% |
| Drove alone to work | 51.5% ±5.9 pts | 53.8% |
| Carpooled | 11.0% ±4.7 pts | 7.3% |
| Public transportation | 6.0% ±4.8 pts | 3.8% |
| Walked | 0.0% ±1.5 pts | 1.2% |
| Worked from home | 29.0% ±6.7 pts | 32.1% |
| Mean travel time to work | 35.0 min ±3.5 | 30.3 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 4415.21 compare with the other tracts in Alameda County?
Among Alameda County's tracts with a reliable estimate, Census Tract 4415.21 ranks as shown below (1 = highest).
| Measure | In Alameda County | In Fremont |
|---|---|---|
| Population | 67th of 375 | 12th of 47 |
| Residents per square mile | 215th of 378 | 22nd of 48 |
| Median household income | 64th of 372 | 17th of 47 |
| Per capita income | 168th of 377 | 29th of 47 |
| Median home value | 73rd of 366 | 20th of 47 |
| Median gross rent | 1st of 368 | 1st of 45 |
| Poverty rate | 129th of 263 | 4th of 25 |
| Bachelor's degree or higher | 141st of 376 | 23rd of 47 |
| Median age | 129th of 377 | 14th of 47 |
| Owner-occupied share | 75th of 366 | 10th of 47 |
The tracts next to it on Alameda County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4446.02 | 61st | $202,619±$19,881 · within the margin of this tract |
| Tract 4443.01 | 62nd | $201,815±$39,121 · within the margin of this tract |
| Tract 4504 | 63rd | $201,458±$39,096 · within the margin of this tract |
| Tract 4415.21 | 64th | $199,254±$27,801 |
| Tract 4206 | 65th | $199,091±$54,708 · within the margin of this tract |
| Tract 4506.05 | 66th | $198,500±$33,648 · within the margin of this tract |
| Tract 4507.45 | 67th | $198,147±$27,793 · 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 4415.21?
1 of the 18 figures for Census Tract 4415.21 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