Mercersburg, PA Profile: Facts & Data

Mercersburg, Pennsylvania - Basic Facts

The Borough of Mercersburg had a population of 1,553 as of July 1, 2025.

The primary coordinate point for Mercersburg is located at latitude 39.8279 and longitude -77.9033 in Franklin County. The formal boundaries for the Borough of Mercersburg encompass a land area of 0.9 sq. miles and a water area of 0 sq. miles. Franklin County is in the Eastern time zone (GMT -5).

The Borough of Mercersburg has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Jump to... (On This Page!)

Mercersburg, PA Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	1,553 (100%)
Population in Households	1,553 (100.0%)
Population in Families	1,171 (75.4%)
Population in Group Quarters¹	0
Population Density	1,722
Diversity Index²	34


INCOME
Median Household Income	$75,687
Average Household Income	$92,865
% of Income for Mortgage⁴	23%
Per Capita Income	$40,184
Wealth Index⁵	64
Socioeconomic Status Index⁶	Moderate (50.0)

HOUSING
Total HU (Housing Units)	779 (100%)
Owner Occupied HU	369 (47.4%)
Renter Occupied HU	303 (38.9%)
Vacant Housing Units	107 (13.7%)
Median Home Value	$276,064
Average Home Value	$291,511
Housing Affordability Index³	99

HOUSEHOLDS
Total Households	672
Average Household Size	2.31
Family Households	398
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

779 (100%)

Owner Occupied HU

369 (47.4%)

Renter Occupied HU

303 (38.9%)

Vacant Housing Units

107 (13.7%)

Median Home Value

$276,064

Average Home Value

$291,511

Housing Affordability Index³

HOUSEHOLDS

Total Households

672

Average Household Size

2.31

Family Households

398

Average Family Size

3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	0.57%	0.27%
Households	0.78%	0.50%
Families		0.45%
Median Household Income		1.17%
Per Capita Income		1.94%
Owner Occupied HU		1.11%

GROWTH RATE / YEAR

2020-2025

2025-2030

Population

0.57%

0.27%

Households

0.78%

0.50%

Families

0.45%

Median Household Income

1.17%

Per Capita Income

1.94%

Owner Occupied HU

1.11%

Mercersburg, PA - Peer Comparisons by Rank and Percentile

The table below compares Mercersburg to the other 2,002 incorporated cities, towns and CDPs in Pennsylvania by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description	Rank	Percentile
Total Population	# 770	62nd
Population Density	# 815	59th
Median Household Income	# 811	60th
Housing Affordability Index	# 831	42nd
Per Capita Income	# 742	63rd
Diversity Index	# 545	73rd

Variable Description

Rank

Percentile

Total Population

# 770

62nd

Population Density

# 815

59th

Median Household Income

# 811

60th

Housing Affordability Index

# 831

42nd

Per Capita Income

# 742

63rd

Diversity Index

# 545

73rd

Pennsylvania Census Data Comparison Tool

Mercersburg, PA Profile: Facts & Data

Mercersburg, Pennsylvania - Basic Facts

Mercersburg, PA Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Mercersburg, PA - Peer Comparisons by Rank and Percentile

Mercersburg, PA - Most Popular Things to Do

Use HTL Address Research for a Pennsylvania Address and get...

Quick & Easy Ways to...

Pennsylvania Census Data Comparison Tool

Franklin County