Lancaster County Population

1790–2026

564.26K

2026 projection

2.1% since 2020 (increase)

0100K200K300K400K500K600K18001850190019502000

Source: U.S. Census Bureau decennial counts and annual 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 County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026564,256+1,0970.19%
2025563,159+1,0970.20%
2024562,062+1,9180.34%
2023560,144+3,0520.55%
2022557,092+6720.12%
2021556,420+3,6010.65%
2020552,819+7,3781.35%
2019545,441+1,4810.27%
2018543,960+2,6080.48%
2017541,352+3,0490.57%

Showing 10 of 38 years.

Lancaster County Demographics

39.4median age

Median age

Female40.7 yrs
Male38.2 yrs

Adults

428,981
109,434 seniors (65+) · 26% of adults319,547 other adults

Sex

Female 50.8% · 283,559Male 49.2% · 274,372

Population by age

MaleFemale85+ years, male: 5,36885+ years, female: 10,28180–84 years, male: 5,96080–84 years, female: 7,38475–79 years, male: 9,23175–79 years, female: 11,18370–74 years, male: 12,21470–74 years, female: 14,86065–69 years, male: 16,29565–69 years, female: 16,65860–64 years, male: 17,75660–64 years, female: 18,94755–59 years, male: 16,68455–59 years, female: 16,90950–54 years, male: 15,82050–54 years, female: 15,92545–49 years, male: 14,86145–49 years, female: 14,93340–44 years, male: 16,64640–44 years, female: 17,18035–39 years, male: 16,86135–39 years, female: 16,36730–34 years, male: 18,37530–34 years, female: 18,53225–29 years, male: 17,41725–29 years, female: 17,39520–24 years, male: 17,03820–24 years, female: 17,13515–19 years, male: 19,01415–19 years, female: 18,10810–14 years, male: 18,88510–14 years, female: 18,0125–9 years, male: 18,0715–9 years, female: 16,8820–4 years, male: 17,8760–4 years, female: 16,86885+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K10K10K15K15K

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 5,579 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 County Income

$86,959median household income

Median household income

$86,959

Half of households earn more, half earn less

Median earnings

$52,871

Typical yearly pay for a worker 25 or older.

Poverty rate

8.2%

About 1 in 12 residents

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

Lancaster County Marital Status

56% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married56%58%53%
Never married29%31%28%
Divorced8%7%9%
Widowed6%3%9%
Separated1%1%1%

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

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year