Editing Hillsborough, California (section)

==Demographics==
{{US Census population
|1920= 931
|1930= 1891
|1940= 2747
|1950= 3552
|1960= 7554
|1970= 8753
|1980= 10372
|1990= 10667
|2000= 10825
|2010= 10825
|2020= 11387
|footnote=U.S. Decennial Census<ref name="DecennialCensus">{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=Census of Population and Housing|publisher=Census.gov|access-date=June 4, 2015}}</ref>
}}

===2010===
At the [[2010 United States Census|2010 census]] Hillsborough had a population of 10,825. The population density was {{convert|1,748.9|PD/sqmi|PD/km2|sp=us|adj=off}}. The racial makeup of Hillsborough was 7,178 (66.3%) White, 42 (0.4%) African American, 7 (0.1%) Native American, 3,044 (28.1%) Asian, 23 (0.2%) Pacific Islander, 109 (1.0%) from other races, and 422 (3.9%) from two or more races.  Hispanic or Latino of any race were 373 people (3.4%).<ref>{{cite web|url=http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0633798|archive-url=https://archive.today/20140715025547/http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0633798|url-status=dead|archive-date=July 15, 2014|title=2010 Census Interactive Population Search: CA – Hillsborough town|publisher=U.S. Census Bureau|access-date=July 12, 2014}}</ref>

The census reported that 10,825 people (100% of the population) lived in households, as no other type of residence exists in Hillsborough.

There were 3,693 households, 1,445 (39.1%) had children under the age of 18 living in them, 2,804 (75.9%) were [[marriage|opposite-sex married couples]] living together, 220 (6.0%) had a female householder with no husband present, 114 (3.1%) had a male householder with no wife present.  There were 66 (1.8%) [[POSSLQ|unmarried opposite-sex partnerships]], and 34 (0.9%) [[same-sex partnerships|same-sex married couples or partnerships]]. 451 households (12.2%) were one person and 309 (8.4%) had someone living alone who was 65 or older. The average household size was 2.93.  There were 3,138 families (85.0% of households); the average family size was 3.18.

The age distribution was 2,877 people (26.6%) under the age of 18, 466 people (4.3%) aged 18 to 24, 1,600 people (14.8%) aged 25 to 44, 3,667 people (33.9%) aged 45 to 64, and 2,215 people (20.5%) who were 65 or older.  The median age was 47.5 years. For every 100 females, there were 94.8 males.  For every 100 females age 18 and over, there were 91.9 males.

There were 3,912 housing units at an average density of 632.0 per square mile, of the occupied units 3,490 (94.5%) were owner-occupied and 203 (5.5%) were rented. The homeowner vacancy rate was 1.3%; the rental vacancy rate was 4.2%.  10,206 people (94.3% of the population) lived in owner-occupied housing units and 619 people (5.7%) lived in rental housing units.

In 2019, a ''[[Bloomberg L.P.|Bloomberg]]'' analysis ranked Hillsborough as the fifth richest town in the United States with a median household income of $373,128.<ref>{{cite web|url=https://www.bloomberg.com/news/articles/2019-02-13/silicon-valley-suburb-snags-richest-spot-in-u-s-for-third-year | title=These Are the Wealthiest Towns in the U.S. | publisher=Bloomberg | access-date=August 18, 2018 }}</ref>

===2000===
At the [[2000 United States Census|2000 census]] there were 10,825 people, 3,689 households, and 3,161 families in the town. The population density was {{convert|1,738.7|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 3,804 housing units at an average density of {{convert|611.0|/sqmi|/km2|sp=us|adj=off}}.<ref name="GR2">{{cite web|url=https://www.census.gov|publisher=[[United States Census Bureau]]|access-date=January 31, 2008|title=U.S. Census website}}</ref>
Of the 3,689 households 36.3% had children under the age of 18 living with them, 78.6% were married couples living together, 4.9% had a female householder with no husband present, and 14.3% were non-families. 11.1% of households were one person and 7.3% were one person aged 65 or older. The average household size was 2.93 and the average family size was 3.14.

The age distribution was 25.1% under the age of 18, 4.4% from 18 to 24, 19.7% from 25 to 44, 32.2% from 45 to 64, and 18.6% 65 or older. The median age was 46 years. For every 100 females, there were 94.6 males. For every 100 females age 18 and over, there were 91.6 males.

The median household income was $193,157 and the median family income  was $200,000. Full-time male workers have a median income of $100,000+ versus $55,882 for full-time female workers. The per capita income for the town was $98,643. About 1.8% of families and 2.8% of the population were below the [[poverty line]], including 2.7% of those under age 18 and 0.8% of those age 65 or over. According to ''The Best Places to Live 2007'' in [[Money Magazine]], Hillsborough's $263,456 median household income is the highest in the country.