Editing Brentwood, California (section)

==Demographics==
{{US Census population
|1950= 1729
|1960= 2186
|1970= 2649
|1980= 4434
|1990= 7563
|2000= 23302
|2010= 51481
|2020= 64292
|estimate= 65350
|estyear=2024
|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>
}}

===2020===
The [[2020 United States census]] reported that Brentwood had a population of 64,292. The population density was {{convert|4,325.1|PD/sqmi|PD/km2|sp=us|adj=off}}. The racial makeup of Brentwood was 51.4% [[White Americans|White]], 6.9% [[African Americans|African American]], 1.0% [[Native Americans in the United States|Native American]], 13.4% [[Asian Americans|Asian]], 0.5% [[Pacific Islander Americans|Pacific Islander]], 10.8% from [[Race (United States Census)|other races]], and 15.9% from two or more races. [[Hispanic and Latino Americans|Hispanic or Latino]] of any race were 26.6% of the population.<ref name=2020-DP1>{{cite web |title=Brentwood city, California; DP1: Profile of General Population and Housing Characteristics - 2020 Census of Population and Housing |url=https://data.census.gov/table/DECENNIALDP2020.DP1?g=1600000US0608142 |website=US Census Bureau |access-date=March 26, 2025}}</ref>

The Census reported that 99.8% of the population lived in households, 0.2% lived in non-institutionalized group quarters, and 0.0% were institutionalized.<ref name=2020-DP1/>

There were 20,793 households, out of which 42.6% included children under the age of 18, 63.4% were married-couple households, 5.0% were [[cohabitation|cohabiting]] couple households, 21.0% had a female householder with no partner present, and 10.6% had a male householder with no partner present. 15.9% of households were one person, and 9.9% were one person aged 65 or older. The average household size was 3.09.<ref name=2020-DP1/> There were 16,731 [[family (U.S. Census)|families]] (80.5% of all households).<ref name=P16>{{cite web |title=Brentwood city, California; P16: Household Type - 2020 Census of Population and Housing |url=https://data.census.gov/table/DECENNIALDHC2020.P16?g=1600000US0608142 |website=US Census Bureau |access-date=April 4, 2025}}</ref>

The age distribution was 26.2% under the age of 18, 8.7% aged 18 to 24, 23.1% aged 25 to 44, 25.8% aged 45 to 64, and 16.2% who were 65{{nbsp}}years of age or older. The median age was 39.3{{nbsp}}years. For every 100 females, there were 93.5 males.<ref name=2020-DP1/>

There were 21,228 housing units at an average density of {{convert|1,428.1|/mi2|/km2|disp=preunit|units&nbsp;|units|}}, of which 20,793 (98.0%) were occupied. Of these, 76.2% were owner-occupied, and 23.8% were occupied by renters.<ref name=2020-DP1/>

===2023 estimates===
In 2023, the US Census Bureau estimated that 18.8% of the population were foreign-born. Of all people aged 5 or older, 70.8% spoke only English at home, 13.0% spoke [[Spanish language|Spanish]], 5.8% spoke other [[Indo-European languages]], 9.0% spoke Asian or Pacific Islander languages, and 1.4% spoke other languages. Of those aged 25 or older, 92.1% were high school graduates and 38.8% had a bachelor's degree.<ref>{{cite web |title=Brentwood city, California; CP02: Comparative Social Characteristics in the United States - 2023 ACS 5-Year Estimates Comparison Profiles |url=https://data.census.gov/table/ACSCP5Y2023.CP02?g=1600000US0608142 |website=US Census Bureau |access-date=March 26, 2025}}</ref>

The median household income was $139,567, and the [[per capita income]] was $55,927. About 6.1% of families and 7.8% of the population were below the poverty line.<ref>{{cite web |title=Brentwood city, California; DP03: Selected Economic Characteristics - 2023 ACS 5-Year Estimates Comparison Profiles |url=https://data.census.gov/table/ACSDP5Y2023.DP03?g=1600000US0608142 |website=US Census Bureau |access-date=March 26, 2025}}</ref>

===Voter Demographics===
According to the [[Secretary of State of California|California Secretary of State]], as of February 20, 2024, Brentwood has 42,146 registered voters. Of those, 18,726 (44.4%) are registered [[California Democratic Party|Democrats]], 11,590 (27.5%) are registered [[California Republican Party|Republicans]], and 9,598 (22.8%) have [[Decline to State|declined to state]] their political affiliation.<ref>{{cite web|url=https://elections.cdn.sos.ca.gov/ror/15day-presprim-2024/politicalsub.pdf|title=Report of Registration as of February 20, 2024 - Registration by Political Subdivision by County|website=ca.gov|access-date=May 31, 2024|page=9}}</ref>