Demographics

Maintaining


Change in Total Population by Age, 2020-24

What does this measure?

The change in population of a geographic area broken down by selected age groups since 2008-12.

Why is this important?

Population measures provide insight on the changing size and face of communities, and an area's needs and assets. For example, areas with large or growing populations of seniors or children may face challenges in providing needed services and generating enough tax revenue to support those services.

How does our county compare?

The population of Lancaster County has been aging. From 2010-14 to 2020-24, the number of people between the ages of 60 and 84 increased 32%, outpacing the state and similar to the national rate. The population aged 85 and older grew 15%, outpacing both the state and the nation. By comparison, the population ages 40 to 59 declined by 8%, and there was an increase of only 7% among people 20 to 39. There was no change in the population among those under 20.

In 2020-24, people under age 20 were the largest single age group in Lancaster County, with almost 144,000 people, followed by those between the ages of 20 and 39 and people between the ages of 40 and 59, with approximately 139,100 and 129,000 people in each group respectively.

One of the most dramatic age shifts among comparison counties has been in Chester County, where those aged 60 to 84 increased by 39% between 2010-14 and 2020-24. Cumberland County had the largest growth in the under 20 population at 13%. In the City of Lancaster, the population ages 60 to 84 increased 25% while the population under age 20 declined 17%.

Notes about the data

The multi-year figures are from the Census Bureau's American Community Survey. The bureau combined multiple years of responses to the survey to provide estimates for smaller geographic areas and increase the precision of its estimates. The survey provides data on characteristics of the population that used to be collected only during the decennial census.

Change in Total Population by Age, 2020-24
Under 2020 to 3940 to 5960 to 8485 or Older
Pennsylvania-3%4%-11%25%-2%
Lancaster County-0%7%-8%32%15%
Lancaster City-17%7%-9%25%-45%*
Lancaster County School Districts
School District of Lancaster-13%9%-10%38%-43%*
Cocalico School District7%2%-4%9%81%**
Columbia Borough School District-25%4%-7%23%55%**
Conestoga Valley School District1%9%-6%19%71%*
Donegal School District0%-1%-2%36%20%*
Eastern Lancaster County School District-1%-1%-9%16%9%*
Elizabethtown Area School District-12%3%-3%47%28%*
Ephrata Area School District0%3%-15%38%80%*
Hempfield School District5%-6%-14%60%23%
Lampeter-Strasburg School District8%17%-6%26%10%
Manheim Central School District3%13%-6%44%-10%**
Manheim Township School District9%28%3%20%14%
Penn Manor School District15%16%-10%24%-12%*
Pequea Valley School District-3%10%4%14%226%*
Solanco School District7%-6%-14%35%-3%**
Warwick School District-5%12%-15%38%14%*
Lancaster County Boroughs
Adamstown borough42%*-18%*43%14%*-17%***
Akron borough29%-10%-26%*48%-23%***
Christiana borough-32%*1%*-19%*68%*-23%***
Columbia borough-25%4%-7%23%55%**
Denver township3%*-5%-19%17%*60%***
East Petersburg borough-8%*-38%*6%*67%*37%***
Elizabethtown borough-9%-6%-9%62%16%**
Ephrata borough3%2%-28%39%162%**
Lititz borough-8%16%-18%29%-13%*
Manheim borough48%*27%-23%*-21%*-85%***
Marietta borough-26%*14%-16%96%*53%***
Millersville borough21%0%-0%*24%-50%***
Mount Joy borough8%*-2%-7%45%49%**
Mountville borough85%*-29%*-12%*4%*182%***
New Holland borough30%*-16%*11%*3%*80%***
Quarryville borough15%-13%*16%39%-89%***
Strasburg borough-31%*-13%*-23%*153%*164%***
Terre Hill borough-28%*9%*-48%**-56%**1,467%***
Lancaster County Townships
Bart township3%-8%-4%*30%*-27%***
Brecknock township2%8%-11%*22%71%***
Caernarvon township-15%17%*-13%14%-37%**
Clay township-2%*5%*0%*22%91%***
Colerain township6%-11%4%25%338%***
Conestoga township-18%*-3%*-15%*60%*289%***
Conoy township-17%*14%*-9%*8%*153%***
Drumore township-16%*6%-8%35%14%***
Earl township21%-20%*11%*-11%-5%*
East Cocalico township5%17%-8%-2%121%***
East Donegal township5%2%18%15%-34%***
East Drumore township4%-15%*-5%*17%*61%***
East Earl township-25%9%-25%*101%*9%***
East Hempfield township1%1%-7%57%11%*
East Lampeter township6%5%1%12%220%**
Eden township40%24%*-29%*20%-50%***
Elizabeth township6%-19%*-27%79%*-33%***
Ephrata township-10%8%*-2%47%59%*
Fulton township24%9%*-29%8%*-23%***
Lancaster township5%17%-13%62%-41%*
Leacock township-5%*12%15%*21%-61%***
Little Britain township-1%-26%*-12%*65%*-12%***
Manheim township9%28%3%20%15%
Manor township18%17%-5%15%-14%**
Martic township17%*5%-27%32%-65%***
Mount Joy township-13%2%-0%44%144%***
Paradise township5%3%*-3%*21%*545%**
Penn township3%18%*2%53%-30%*
Pequea township11%*95%*-10%*30%*341%***
Providence township5%*-0%*-28%*53%-34%***
Rapho township-13%-0%-5%62%133%***
Sadsbury township11%9%-13%9%-73%***
Salisbury township-7%12%3%6%435%**
Strasburg township26%*34%*-43%*26%*-100%***
Upper Leacock township-13%0%1%28%69%***
Warwick township-5%17%-10%34%93%*
West Cocalico township4%*-4%-1%21%-27%***
West Donegal township-13%7%*-7%39%20%*
West Earl township8%37%-28%23%8%*
West Hempfield township5%-1%-29%81%21%*
West Lampeter township13%20%8%14%5%
Berks County-1%10%-8%25%12%
Chester County0%13%-6%39%3%
Cumberland County13%15%-1%26%24%
Dauphin County5%10%-8%32%3%
Lebanon County4%9%-9%25%26%
York County1%9%-10%30%30%

Source: U.S. Census Bureau
Notes: Rate is percentage change from 2010-14. Multiyear results are from rolling American Community Survey. * Margin of error between 20% & 35% of estimate; ** margin of error between 35% & 50%; *** margin of error greater than 50%.




Total Population by Age, 2020-24
Under 2020 to 3940 to 5960 to 8485 or Older
Pennsylvania3,025,3073,328,4223,215,7483,135,631313,531
Lancaster County143,716139,120128,958130,48815,649
Lancaster City14,70420,96013,1118,513431*
Lancaster County School Districts
School District of Lancaster18,92326,10116,48313,443940*
Cocalico School District6,9145,6786,3784,551765**
Columbia Borough School District2,0922,7802,4172,497492**
Conestoga Valley School District10,0048,9368,1247,2361,040*
Donegal School District5,4946,0115,9714,836355*
Eastern Lancaster County School District9,7017,2557,2127,847940*
Elizabethtown Area School District6,9577,7967,9727,8291,786*
Ephrata Area School District8,8039,5417,6758,518958*
Hempfield School District11,71510,22612,25615,8551,451
Lampeter-Strasburg School District6,4314,7245,8257,2601,268
Manheim Central School District5,9706,0556,9468,047580**
Manheim Township School District10,5609,79210,76111,0282,067
Penn Manor School District12,02412,52810,56810,216671*
Pequea Valley School District7,7815,8624,7774,113346*
Solanco School District10,9826,8827,2647,787678**
Warwick School District7,7777,8587,5358,4711,191*
Lancaster County Boroughs
Adamstown borough632*499*608279*5***
Akron borough1,1231,010775*1,15976***
Christiana borough183*258*171*300*86***
Columbia borough2,0922,7802,4172,497492**
Denver township907*1,048912803*101***
East Petersburg borough968*769*1,426*1,357*71***
Elizabethtown borough2,9933,6212,3572,581373**
Ephrata borough3,3184,3422,7302,932450**
Lititz borough2,1012,7131,8382,403564*
Manheim borough1,443*1,6961,065*799*24***
Marietta borough467*758658957*46***
Millersville borough3,1313,1431,278*1,291139***
Mount Joy borough1,930*2,2792,0741,853208**
Mountville borough779*503*762*816*144***
New Holland borough1,501*1,145*1,560*1,455*119***
Quarryville borough833590*73668611***
Strasburg borough574*658*580*1,181*116***
Terre Hill borough275*366*155**161**47***
Lancaster County Townships
Bart township1,357760615*454*33***
Brecknock township2,2421,7481,753*1,757144***
Caernarvon township1,4661,092*1,011922100**
Clay township1,804*1,498*1,601*1,942103***
Colerain township1,49770680188457***
Conestoga township796*741*1,106*1,195*70***
Conoy township610*952*1,041*623*76***
Drumore township775*54658664640***
Earl township2,5621,279*1,332*1,536454*
East Cocalico township2,9952,5662,8301,932626***
East Donegal township2,2322,3132,5151,54584***
East Drumore township1,041835*782*950*321***
East Earl township1,6551,6251,401*2,016*76***
East Hempfield township5,7945,1186,2398,779815*
East Lampeter township4,7874,6744,5173,509471**
Eden township1,097599*439*43712***
Elizabeth township1,107669*9361,193*74***
Ephrata township2,5582,691*2,5692,485329*
Fulton township1,192857*552587*27***
Lancaster township4,2895,2643,5665,019503*
Leacock township1,923*1,645976*1,10520***
Little Britain township1,237665*1,188*996*60***
Manheim township10,5609,79210,76111,0432,081
Manor township5,4175,7375,4815,069285**
Martic township1,467*1,1581,3441,18736***
Mount Joy township2,5012,5933,1272,377205***
Paradise township2,0201,226*1,167*1,089*187**
Penn township2,2742,133*2,5993,172244*
Pequea township1,213*1,749*1,359*1,456*141***
Providence township1,953*1,324*1,565*2,147117***
Rapho township2,2532,2263,2824,076312***
Sadsbury township1,40583762365417***
Salisbury township3,8382,9912,6341,919139**
Strasburg township1,802*1,048*675*1,002*0***
Upper Leacock township2,5812,3501,9921,820196***
Warwick township4,5694,4764,7614,875553*
West Cocalico township2,388*1,5692,0321,53751***
West Donegal township1,7181,291*2,1712,7291,149*
West Earl township2,6361,9121,6151,907373*
West Hempfield township4,1743,8363,8294,903421*
West Lampeter township3,9852,8954,3764,9911,144
Berks County108,578108,300108,39997,32810,410
Chester County137,033131,871144,973123,39110,572
Cumberland County64,40068,97367,15160,3317,468
Dauphin County71,16875,85270,43866,0416,094
Lebanon County35,93833,99634,17335,7494,330
York County111,788113,214117,820109,52010,582

Source: U.S. Census Bureau
Notes: Multiyear results are from rolling American Community Survey. * Margin of error between 20% & 35% of estimate; ** margin of error between 35% & 50%; *** margin of error greater than 50%.
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