ZIP Code 94021
ZIP Code Tabulation Area in San Mateo County, California.
- Population
- 332
- Median household income
- $209,712
- Median home value
- $1,020,800
-35.0%’19–’23
+18.4%’19–’23
+42.2%’19–’23
Covering part of San Mateo County, California, ZIP Code 94021 has about 332 residents. Its median household income of $209,712 runs above the San Mateo County figure of $156,000.
Between 2019 and 2023, ZIP Code 94021's population declined 35.0% from 511 to 332, while its median household income rose 18.4% from $177,163 to $209,712.
Households average 2.24 people. 63.3% of adults 25 and older hold a bachelor's degree or higher.
Demographics
ACS 2019–2023- Population
- 332
- Median age
- 51.1 yrs
- Median household income
- $209,712
- Median home value
- $1,020,800
- Median gross rent
- —
- Housing units
- 160
- Homeownership rate
- 74.3%
- Bachelor's degree or higher
- 63.3%
- Unemployment rate
- 0.0%
Trends
ACS 5-year · 2019–2023511332
$177,163$209,712
$717,900$1,020,800
| Year | Population | Median household income | Median home value | Median gross rent |
|---|---|---|---|---|
| 2019 | 511 | $177,163 | $717,900 | — |
| 2020 | 574 | $246,133 | $742,600 | $1,674 |
| 2021 | 263 | $250,001 | — | — |
| 2022 | 123 | $201,950 | — | — |
| 2023 | 332 | $209,712 | $1,020,800 | — |
Each year is a US Census Bureau ACS 5-year estimate ending that year.
Age distribution
Under 50.0%
5 to 1724.4%
18 to 240.0%
25 to 340.0%
35 to 4416.6%
45 to 5422.0%
55 to 643.9%
65 to 7429.8%
75 and over3.3%
| Count | Share | |
|---|---|---|
| Under 5 | 0 | 0.0% |
| 5 to 17 | 81 | 24.4% |
| 18 to 24 | 0 | 0.0% |
| 25 to 34 | 0 | 0.0% |
| 35 to 44 | 55 | 16.6% |
| 45 to 54 | 73 | 22.0% |
| 55 to 64 | 13 | 3.9% |
| 65 to 74 | 99 | 29.8% |
| 75 and over | 11 | 3.3% |
Race & ethnicity
| Count | Share | |
|---|---|---|
| White (non-Hispanic) | 305 | 91.9% |
| Black or African American | 0 | 0.0% |
| American Indian & Alaska Native | 0 | 0.0% |
| Asian | 27 | 8.1% |
| Native Hawaiian & Pacific Islander | 0 | 0.0% |
| Some other race | 0 | 0.0% |
| Two or more races | 0 | 0.0% |
| Hispanic or Latino (any race) | 0 | 0.0% |
Educational attainment (age 25+)
No high school diploma0.0%
High school graduate11.2%
Some college or associate's25.5%
Bachelor's degree34.7%
Graduate or professional degree28.7%
| Count | Share | |
|---|---|---|
| No high school diploma | 0 | 0.0% |
| High school graduate | 28 | 11.2% |
| Some college or associate's | 64 | 25.5% |
| Bachelor's degree | 87 | 34.7% |
| Graduate or professional degree | 72 | 28.7% |
Commute to work
Drove alone79.5%
Carpooled14.2%
Public transit0.0%
Walked0.0%
Bicycle0.0%
Worked from home6.3%
Other means0.0%
How workers get to work
| Count | Share | |
|---|---|---|
| Drove alone | 140 | 79.5% |
| Carpooled | 25 | 14.2% |
| Public transit | 0 | 0.0% |
| Walked | 0 | 0.0% |
| Bicycle | 0 | 0.0% |
| Worked from home | 11 | 6.3% |
| Other means | 0 | 0.0% |
Travel time
| Count | Share | |
|---|---|---|
| Under 15 min | 0 | 0.0% |
| 15 to 29 min | 14 | 8.5% |
| 30 to 44 min | 53 | 32.1% |
| 45 to 59 min | 0 | 0.0% |
| 60+ min | 98 | 59.4% |
Households
- Average household size
- 2.24
- Poverty rate
- 0.0% (0 of 332)
| Count | Share | |
|---|---|---|
| Family households | 95 | 64.2% |
| Nonfamily households | 53 | 35.8% |
Housing
- Median year structure built
- 1938
Occupancy
| Count | Share | |
|---|---|---|
| Occupied | 148 | 92.5% |
| Vacant | 12 | 7.5% |
Tenure (of occupied units)
| Count | Share | |
|---|---|---|
| Owner-occupied | 110 | 74.3% |
| Renter-occupied | 38 | 25.7% |
1-unit, detached100.0%
1-unit, attached0.0%
2 to 4 units0.0%
5 to 19 units0.0%
20 or more units0.0%
Mobile home & other0.0%
Units in structure
| Count | Share | |
|---|---|---|
| 1-unit, detached | 160 | 100.0% |
| 1-unit, attached | 0 | 0.0% |
| 2 to 4 units | 0 | 0.0% |
| 5 to 19 units | 0 | 0.0% |
| 20 or more units | 0 | 0.0% |
| Mobile home & other | 0 | 0.0% |
Geography
- ZCTA
- 94021
- Land area
- 11 sq mi
- Water area
- 0 sq mi
- Center point
- 37.2503, -122.2496
Counties this ZIP covers
1Compare with nearby ZIP codes
6National ZIP rankings
21- Largest by population
- Most densely populated
- Highest median household income
- Highest median home value
- Most affordable home values
- Highest median gross rent
- Cheapest median gross rent
- Oldest by median age
- Youngest by median age
- Most college-educated
- Highest poverty rate
- Lowest poverty rate
- Highest homeownership rate
- Lowest homeownership rate
- Longest commutes
- Shortest commutes
- Largest households
- Newest housing
- Oldest housing
- Fastest-growing (2019–2023)
- Fastest-shrinking (2019–2023)