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Lancaster County, PA Population by Age

The median age in Lancaster County, PA is 38.7, as per 2021 ACS 5-Year Estimates. Of the total population, 19.64% were under the age of 15, 19.38% aged 15 to 29, 43.01% aged 30 to 64, 15.36% aged 65 to 84, and 2.61% were 85 years of age and older.
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By Neilsberg Research
Updated Sep 17, 2023

Lancaster County, PA population age distribution

A complete breakdown of Lancaster County's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.

Age Group Population % of Total Population
Under 5 years 35,231 6.4%
5 to 9 years 35,428 6.44%
10 to 14 years 37,429 6.8%
15 to 19 years 36,792 6.68%
20 to 24 years 33,766 6.13%
25 to 29 years 36,129 6.56%
30 to 34 years 35,713 6.49%
35 to 39 years 32,605 5.92%
40 to 44 years 31,380 5.7%
45 to 49 years 31,231 5.67%
50 to 54 years 33,549 6.09%
55 to 59 years 37,001 6.72%
60 to 64 years 35,307 6.41%
65 to 69 years 31,342 5.69%
70 to 74 years 24,039 4.37%
75 to 79 years 16,848 3.06%
80 to 84 years 12,347 2.24%
85 years and over 14,343 2.61%
Exploring Lancaster County's Diversity? Request Customized Data Now!

TABLE OF CONTENTS

Lancaster County, PA population by age group

Key stats
178,646
Population under 25 years
135,827
Population aged 25-44
137,088
Population aged 45-64
98,919
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The graph shows Lancaster County's population by age group, with age group on x-axis and the respective age group's percent of the total population on y-axis
Lancaster County, PA population by age group. The largest age group was 10-14 years with a poulation of 37,429 (6.80% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Lancaster County, PA was for the group of age 10-14 years with a population of 37,429 (6.80%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Lancaster County, PA was the 80-84 years with a population of 12,347 (2.24%).

Lancaster County, PA population by age cohort

To better understand the age distribution of Lancaster County, PA's population, we divided it into the following 3 cohorts:

  • Children : Under the age of 18 years
  • Adults (working population): Between the age of 18 and 64 years
  • Seniors: 65 years and above
The pie chart shows Lancaster County's population divided into segments, with each segment representing an age cohort. The area of each segment is in the same proportion of a circle as the population of the cohort is of the total population.
Lancaster County, PA population by age cohorts (Children: Under 18 years; Working population: 18-64 years; Senior population: 65 years or more). The largest age group was 18 - 64 years with a poulation of 321,320 (58.37% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the population for each of the three cohorts.

Age Group Population % of Total Population
Under 18 years 130,241 23.66%
18 to 64 years 321,320 58.37%
85 years and over 98,919 17.97%
Exploring Lancaster County's Diversity? Request Customized Data Now!

Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Lancaster County's population under 18 was 23.66%, compared to the 22.51% nationwide.
  • Lancaster County's working population (between 18 and 64) was 58.37%, compared to 61.45% nationwide.
  • Lancaster County's elderly or the senior population (over 65 age) was 17.97% as compared to 16.04% nationwide.

Lancaster County, PA population pyramid

Population pyramid for Lancaster County, PA is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.

Key stats from our analysis of the Lancaster County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Lancaster County, PA, is 31.5.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Lancaster County, PA, is 28.8.
  • Total dependency ratio for Lancaster County, PA is 60.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Lancaster County, PA is 3.5.
The graph shows Lancaster County's population across different age group and gender, with population on x-axis and population y-axis. The male population is plotted on the left in blue color whereas the female population is plotted on the right in pink color.
Lancaster County, PA population pyramid i.e. Lancaster County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Lancaster County, PA's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 18,099 17,132 35,231
5 to 9 years 17,700 17,728 35,428
10 to 14 years 19,720 17,709 37,429
15 to 19 years 18,760 18,032 36,792
20 to 24 years 16,869 16,897 33,766
25 to 29 years 18,039 18,090 36,129
30 to 34 years 17,737 17,976 35,713
35 to 39 years 16,296 16,309 32,605
40 to 44 years 15,738 15,642 31,380
45 to 49 years 15,569 15,662 31,231
50 to 54 years 16,712 16,837 33,549
55 to 59 years 18,174 18,827 37,001
60 to 64 years 17,216 18,091 35,307
65 to 69 years 15,227 16,115 31,342
70 to 74 years 11,093 12,946 24,039
75 to 79 years 7,614 9,234 16,848
80 to 84 years 5,494 6,853 12,347
85 years and over 5,085 9,258 14,343
Exploring Lancaster County's Diversity? Request Customized Data Now!

Things to know

What is the population of Lancaster County, PA under 18?

Lancaster County's population under the age of 18 is 130,241, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 23.66% of the total resident population of Lancaster County, PA.

What is the aging population in Lancaster County, PA?

Lancaster County's population aged 65 years and above was 98,919. As per the U.S. Census Bureau's American Community Survey, this population is 17.97% of the entire population.

References

Datasets

Explore datasets by year of publication.
2023
Lancaster County, PA Age Group Population Dataset: A complete breakdown of Lancaster County age demographics from 0 to 85 years, distributed across 18 age groups
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Lancaster County population distribution across 18 age groups. It lists the population in each age group along with the percentage population relative of the total population for Lancaster County. The dataset can be utilized to understand the population distribution of Lancaster County by age. For example, using this dataset, we can identify the largest age group in Lancaster County.

Key observations

The largest age group in Lancaster County, PA was for the group of age 10-14 years with a population of 37,429 (6.80%), according to the 2021 American Community Survey. At the same time, the smallest age group in Lancaster County, PA was the 80-84 years with a population of 12,347 (2.24%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Lancaster County population by age group

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Age groups:

  • Under 5 years
  • 5 to 9 years
  • 10 to 14 years
  • 15 to 19 years
  • 20 to 24 years
  • 25 to 29 years
  • 30 to 34 years
  • 35 to 39 years
  • 40 to 44 years
  • 45 to 49 years
  • 50 to 54 years
  • 55 to 59 years
  • 60 to 64 years
  • 65 to 69 years
  • 70 to 74 years
  • 75 to 79 years
  • 80 to 84 years
  • 85 years and over

Variables / Data Columns

  • Age Group: This column displays the age group in consideration
  • Population: The population for the specific age group in the Lancaster County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Lancaster County total population. Please note that the sum of all percentages may not equal one due to rounding of values.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Lancaster County Population by Age. You can refer the same here

Lancaster County, PA Age Cohorts Dataset: Children, Working Adults, and Seniors in Lancaster County - Population and Percentage Analysis
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Lancaster County population by age cohorts (Children: Under 18 years; Working population: 18-64 years; Senior population: 65 years or more). It lists the population in each age cohort group along with its percentage relative to the total population of Lancaster County. The dataset can be utilized to understand the population distribution across children, working population and senior population for dependency ratio, housing requirements, ageing, migration patterns etc.

Key observations

The largest age group was $b3_v1 with a poulation of $b3_v2 ($b3_v3 of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Lancaster County population by age cohort

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Age cohorts:

  • Under 18 years
  • 18 to 64 years
  • 65 years and over

Variables / Data Columns

  • Age Group: This column displays the age cohort for the Lancaster County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Lancaster County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Lancaster County is shown in the following column.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Lancaster County Population by Age. You can refer the same here

Lancaster County, PA Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Lancaster County, PA population pyramid, which represents the Lancaster County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey 5-Year estimates. It lists the male and female population for each age group, along with the total population for those age groups. Higher numbers at the bottom of the table suggest population growth, whereas higher numbers at the top indicate declining birth rates. Furthermore, the dataset can be utilized to understand the youth dependency ratio, old-age dependency ratio, total dependency ratio, and potential support ratio.

Key observations

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Lancaster County, PA, is 31.5.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Lancaster County, PA, is 28.8.
  • Total dependency ratio for Lancaster County, PA is 60.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Lancaster County, PA is 3.5.

Lancaster County population pyramid

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Age groups:

  • Under 5 years
  • 5 to 9 years
  • 10 to 14 years
  • 15 to 19 years
  • 20 to 24 years
  • 25 to 29 years
  • 30 to 34 years
  • 35 to 39 years
  • 40 to 44 years
  • 45 to 49 years
  • 50 to 54 years
  • 55 to 59 years
  • 60 to 64 years
  • 65 to 69 years
  • 70 to 74 years
  • 75 to 79 years
  • 80 to 84 years
  • 85 years and over

Variables / Data Columns

  • Age Group: This column displays the age group for the Lancaster County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Lancaster County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Lancaster County for the selected age group is shown in the following column.
  • Total Population: The total population of the Lancaster County for the selected age group is shown in the following column.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Lancaster County Population by Age. You can refer the same here

If you're looking for datasets from another year, please feel free to contact us at research@neilsberg.com and we'll be happy to assist you further.

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Lancaster County, PA Demographics Lancaster County, PA Population

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Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.
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Collection 5 Resources