Hillsborough Flag

Hillsborough

County Seat:
No
Area (mi²):
6.166
State:
California

Hillsborough is a town located in San Mateo County, California. Hillsborough has a 2026 population of 11,171. Hillsborough is currently growing at a rate of 1.53% annually but its population has decreased by -1.66% since the most recent census, which recorded a population of 11,360 in 2020.

The median household income in Hillsborough is $250,001 with a poverty rate of 4.98%. The median age in Hillsborough is 47 years: 45.2 years for males, and 47.7 years for females. For every 100 females there are 100.2 males.

11.2K
Total Population
1,812
Density (mi²)
168 1.53%
Growth

Hillsborough Population

Hillsborough Population

Data after 2023 is projected based on recent change

Year
Population
Growth
Annual Change
202411,1711681.53%
202311,003580.53%
202210,945-84-0.76%
202111,029-331-2.91%
202011,360-20-0.18%
201911,584-51-0.44%
201811,635-11-0.09%
201711,646290.25%
201611,617570.49%
201511,5601381.21%
201411,4221491.32%
201311,2731511.36%
201211,1221781.63%
201110,9441411.31%
201010,803200.19%
200010,8251581.48%
199010,6672952.84%
198010,3721,61918.5%
19708,7531,19915.87%
19607,5544,002112.67%
19503,55280529.3%
19402,74785645.27%
19301,891960103.11%
1920931-10,003-91.49%

Median Age

Overall: 47 years
Female: 47.7 years
Male: 45.2 years

Hillsborough Adults

There are 8,136 adults, (2,262 of whom are seniors) in Hillsborough.

Sex Ratio

Female: 5,543 (49.9%)
Male: 5,556 (50.1%)

Demographics

The racial composition of Hillsborough includes 53.17% White, 33.44% Asian, and smaller percentages for other race, Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White5,90153.17%
Asian3,71233.44%
Two or more races1,13010.18%
Other race2792.51%
Black or African American560.5%
Native Hawaiian or Pacific Islander150.14%
Native American60.05%
Race
Population
Percentage (of total)
Two or more races2181.96%
White2141.93%
Other race370.33%
Asian320.29%
Race
Population
Percentage (of total)
White5,68751.24%
Asian3,68033.16%
Two or more races9128.22%
Other race2422.18%
Black or African American560.5%
Native Hawaiian or Pacific Islander150.14%
Native American60.05%

Hillsborough Marital Status

Economics and Income Statistics

Hillsborough's average per capita income is $183,426. Household income levels show a median of $250,001. The poverty rate stands at 4.98%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Households$250,001$546,056
Families$250,001$594,421
Married Families$250,001-
Non Families$162,450$272,929

$183,426

Average Income

$250,001

Median Household Income

4.98%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)