Lancaster Population

1900–2026

169.02K

2026 projection

2.6% since 2020 (decrease)

050K100K150K200K1900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Lancaster. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026169,022-1,0620.62%
2025170,084+1,1550.68%
2024168,929+1,6160.97%
2023167,313-5750.34%
2022167,888-2,1641.27%
2021170,052-3,4642.00%
2020173,516+8760.51%
2019172,640+5700.33%
2018172,070+8270.48%
2017171,243+8170.48%

Showing 10 of 25 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

Lancaster has a population change higher than Los Angeles County, and lower than California and the U.S.

  • United States+3.1%
  • California−0.4%
  • Lancaster−1.8%
  • Los Angeles County−3.0%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

Lancaster Demographics

34.5median age

Median age

Female36 yrs
Male33 yrs

Adults

123,970
20,413 seniors (65+) · 16% of adults103,557 other adults

Sex

Female 50% · 84,620Male 50% · 84,549

Population by age

MaleFemale85+ years, male: 79185+ years, female: 1,31080–84 years, male: 89480–84 years, female: 1,27375–79 years, male: 1,14875–79 years, female: 1,62570–74 years, male: 2,26170–74 years, female: 2,64465–69 years, male: 4,18465–69 years, female: 4,28360–64 years, male: 4,34660–64 years, female: 4,91255–59 years, male: 5,13155–59 years, female: 5,89750–54 years, male: 4,63050–54 years, female: 5,17345–49 years, male: 4,55545–49 years, female: 4,25940–44 years, male: 5,66740–44 years, female: 5,35135–39 years, male: 6,26335–39 years, female: 6,78230–34 years, male: 6,23930–34 years, female: 5,96725–29 years, male: 6,51125–29 years, female: 5,40720–24 years, male: 6,33420–24 years, female: 4,83415–19 years, male: 6,65015–19 years, female: 6,58410–14 years, male: 7,73810–14 years, female: 7,7005–9 years, male: 5,8265–9 years, female: 5,9310–4 years, male: 5,3810–4 years, female: 4,68885+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K6K6K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 1,692 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Lancaster Income

$81,511median household income

Median household income

$81,511

Half of households earn more, half earn less

Median earnings

$51,533

Typical yearly pay for a worker 25 or older.

Poverty rate

15.6%

About 1 in 6 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Lancaster Marital Status

41% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married41%42%39%
Never married43%46%40%
Divorced10%8%12%
Widowed4%2%7%
Separated2%2%3%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources