2020 census As of the
2020 census, Pacifica had a population of 38,640. The population density was . The median age was 42.7 years. The age distribution was 19.0% under the age of 18, 6.7% aged 18 to 24, 27.5% aged 25 to 44, 28.5% aged 45 to 64, and 18.3% who were 65 years of age or older. For every 100 females, there were 97.0 males, and for every 100 females age 18 and over, there were 94.8 males age 18 and over. The census reported that 99.6% of the population lived in households, 0.2% lived in non-institutionalized group quarters, and 0.2% were institutionalized. Additionally, 99.9% of residents lived in urban areas, while 0.1% lived in rural areas. There were 14,180 households, out of which 30.7% included children under the age of 18, 54.6% were married-couple households, 7.0% were
cohabiting couple households, 23.3% had a female householder with no partner present, and 15.1% had a male householder with no partner present. 20.9% of households were one person, and 10.0% were one person aged 65 or older. The average household size was 2.72. There were 10,050
families (70.9% of all households). There were 14,652 housing units at an average density of , of which 14,180 (96.8%) were occupied. Of these, 67.8% were owner-occupied, and 32.2% were occupied by renters. The homeowner vacancy rate was 0.4% and the rental vacancy rate was 3.2%. The median household income in 2023 was $156,819, and the
per capita income was $69,917. About 4.2% of families and 6.2% of the population were below the poverty line.
2010 census At the
2010 census Pacifica had a population of 37,234. The population density was . The racial makeup of Pacifica was 55.6% white, 16.8% (6,243) Hispanic or Latino of any race, 976 (2.6%) African American, 206 (0.6%) Native American, 7,230 (19.4%) Asian, 315 (0.8%) Pacific Islander, 1,703 (4.6%) from
other races, and 2,638 (7.1%) from two or more races. The census reported that 37,052 people (99.5% of the population) lived in households, 64 (0.2%) lived in non-institutionalized group quarters, and 118 (0.3%) were institutionalized. There were 13,967 households, 4,511 (32.3%) had children under the age of 18 living in them, 7,385 (52.9%) were
opposite-sex married couples living together, 1,592 (11.4%) had a female householder with no husband present, 709 (5.1%) had a male householder with no wife present. There were 869 (6.2%)
unmarried opposite-sex partnerships, and 237 (1.7%)
same-sex married couples or partnerships. 3,126 households (22.4%) were one person and 1,098 (7.9%) had someone living alone who was 65 or older. The average household size was 2.65. There were 9,686 families (69.3% of households); the average family size was 3.12. The age distribution was 7,707 people (20.7%) under the age of 18, 2,842 people (7.6%) aged 18 to 24, 10,011 people (26.9%) aged 25 to 44, 12,155 people (32.6%) aged 45 to 64, and 4,519 people (12.1%) who were 65 or older. The median age was 41.5 years. For every 100 females, there were 95.6 males. For every 100 females age 18 and over, there were 93.4 males. There were 14,523 housing units at an average density of 1,147.2 per square mile, of the occupied units 9,545 (68.3%) were owner-occupied and 4,422 (31.7%) were rented. The homeowner vacancy rate was 0.9%; the rental vacancy rate was 4.8%. 26,567 people (71.4% of the population) lived in owner-occupied housing units and 10,485 people (28.2%) lived in rental housing units.
2000 census At the
2000 census, the median
income for a household in the city was $31,737, and the median family income was $48,361 (these figures had risen to $52,000 and $62,463 respectively as of a 2007 estimate). Males had a median income of $50,761 versus $40,261 for females. The per capita income for the city was $30,183. About 1.2% of families and 2.9% of the population were below the
poverty line, including 1.2% of those under age 18 and 4.9% of those age 65 or over. The oldest person to ever live in Pacifica is Rose G. Rosenthal who was born on April 8, 1901, and died December 27, 2008. The
Reverend Herschell Harkins Memorial pier was constructed in 1973 and was designed to carry sewage piping out to sea. It was closed in 1992 due to corrosion of some of the structure. Since then the pier has been repaired and is a well known fishing spot; on July 8–9, 1995, over 1,000 salmon were caught from the pier. ==Economy==