Blair County vs Mercer County

A side-by-side comparison of Blair County and Mercer County: population, income, housing, and more.

Blair County and Mercer County are counties in Pennsylvania. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Blair County has the higher population (121,854 vs 109,852 in Mercer County). Mercer County has the higher median household income ($60,614 vs $60,594 in Blair County). Blair County has the higher median home value ($156,700 vs $153,600 in Mercer County).

Population, income & housing

	Blair County	Mercer County
Population	121,854	109,852
Median age	42.9 yrs	45.2 yrs
Median household income	$60,594	$60,614
Median home value	$156,700	$153,600
Median gross rent	$854	$808
Housing units	55,788	50,884
Homeownership rate	72.4%	72.5%
Bachelor's degree or higher	24.1%	25.1%
Unemployment rate	4.4%	5.3%

Trends (ACS 5-year, 2019–2023)

	Blair County	Mercer County
Population	123,157 → 121,854 (-1.1%)	111,518 → 109,852 (-1.5%)
Median household income	$49,181 → $60,594 (+23.2%)	$50,696 → $60,614 (+19.6%)
Median home value	$123,600 → $156,700 (+26.8%)	$121,100 → $153,600 (+26.8%)
Median gross rent	$722 → $854 (+18.3%)	$689 → $808 (+17.3%)

Blair County

Population

123,157121,854

Median household income

$49,181$60,594

Median home value

$123,600$156,700

Median gross rent

$722$854

Mercer County

Population

111,518109,852

Median household income

$50,696$60,614

Median home value

$121,100$153,600

Median gross rent

$689$808

Age & race/ethnicity

Age distribution (share)

	Blair County	Mercer County
Under 5	5.0%	4.8%
5 to 17	15.3%	14.3%
18 to 24	8.2%	9.3%
25 to 34	12.1%	10.6%
35 to 44	11.8%	10.8%
45 to 54	12.2%	12.4%
55 to 64	14.3%	15.1%
65 to 74	12.3%	12.9%
75 and over	8.8%	9.8%

Race & ethnicity (share)

	Blair County	Mercer County
White (non-Hispanic)	92.6%	88.6%
Black or African American	1.7%	5.5%
American Indian & Alaska Native	0.1%	0.1%
Asian	0.6%	0.6%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.2%	0.3%
Two or more races	3.5%	3.3%
Hispanic or Latino	1.5%	1.6%

Educational attainment (age 25+)

Share of adults 25+

	Blair County	Mercer County
No high school diploma	6.8%	8.7%
High school graduate	45.2%	40.5%
Some college or associate's	23.9%	25.8%
Bachelor's degree	16.4%	16.2%
Graduate or professional degree	7.7%	8.9%

Commute to work

How workers get to work (share)

	Blair County	Mercer County
Drove alone	80.9%	80.8%
Carpooled	8.3%	6.9%
Public transit	0.6%	0.2%
Walked	3.4%	2.8%
Bicycle	0.1%	0.1%
Worked from home	5.9%	7.8%
Other means	0.7%	1.4%

Housing

Units in structure (share)

	Blair County	Mercer County
1-unit, detached	71.7%	74.5%
1-unit, attached	4.1%	2.7%
2 to 4 units	8.8%	6.8%
5 to 19 units	3.8%	4.5%
20 or more units	4.9%	4.0%
Mobile home & other	6.8%	7.5%

Poverty & households

	Blair County	Mercer County
Poverty rate	13.0%	12.8%
Average household size	2.33	2.24
Mean commute (minutes)	21	22
Median year structure built	1957	1963