Mercer County Summary

Life in Mercer County research summary. HomeSnacks has been researching the quality of life in Mercer County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in Mercer County:

  • The population in Mercer County is 383,732.

  • The median home value in Mercer County is $388,903.

  • The median income in Mercer County is $92,697.

  • The median rent in Mercer County is $1,454.

  • The unemployment rate in Mercer County is 6.1%.

  • The poverty rate in Mercer County is 11.2%.

  • The average high in Mercer County is 69.2° and there are 104.4 inches of rainfall annually.

Cities & Towns in Mercer County

List Of Cities & Towns in Mercer County

Trenton, NJ Population 90,055

Alamance , NJ Population 30,450

Mercerville, NJ Population 14,364

Hamilton Square, NJ Population 11,894

White Horse, NJ Population 9,692

Twin Rivers, NJ Population 8,144

Yardville, NJ Population 6,405

Hight, NJ Population 5,864

Lawrenceville, NJ Population 3,759

Groveville, NJ Population 3,335

Pennington, NJ Population 2,780

Princeton Junction, NJ Population 2,022

Hopewell, NJ Population 1,825

Robbinsville, NJ Population 0

Map Of Mercer County

Mercer County, NJ Weather

  • The average high in Mercer County is 69.2°.

  • There are 83.42 nice days each year.

  • Expect an average of 104.4 inches of rain each year with 9.2 inches of snow.

  • There is an average of 4:48 hours of sun each day in Mercer County.

StatMercer County
Mean High69.2
Nice Days83.42
Rainfall104.4
Snowfall9.2
Sunny_hours4:48
69.2°
Average High
104.4
Inches of Rain

Mercer County Photos

Pennington Nj Presby Phs
Source: Public Domain
Penningtonchurch
Source: Public Domain
Mainanddelaware
Source: Public Domain
Toll Gate Grammar School
Source: Public Domain
Jon Corzines Hole
Source: Public Domain
Trenton City Museum
Source: Public Domain

Mercer County Demographics

Population over time in Mercer County

The current population in Mercer County is 383,732. The population has increased 4.6% from 2019.

Year Population % Change
2022 384,951 4.6%
2021 368,085 0.0%
2020 367,922 -

Gender in Mercer County

  • Mercer County is 50.6% female with 194,237 female residents.

  • Mercer County is 49.4% male with 189,495 male residents.

Female
50.6% (194,237)
Male
49.4% (189,495)
Gender Mercer County NJ USA
Female 50.6% 50.7% 50.4%
Male 49.4% 49.3% 49.6%

Race / Ethnicity in Mercer County

Mercer County is:

  • 46.7% White with 179,054 White residents.

  • 19.1% African American with 73,261 African American residents.

  • 0.1% American Indian with 426 American Indian residents.

  • 12.1% Asian with 46,546 Asian residents.

  • 0.0% Hawaiian with 88 Hawaiian residents.

  • 0.2% Other with 944 Other residents.

  • 2.5% Two Or More with 9,706 Two Or More residents.

  • 19.2% Hispanic with 73,707 Hispanic residents.

White
46.7% (179,054)
African American
19.1% (73,261)
American Indian
0.1% (426)
Asian
12.1% (46,546)
Hawaiian
0.0% (88)
Other
0.2% (944)
Two Or More
2.5% (9,706)
Hispanic
19.2% (73,707)

Table: Mercer County By Race

Race Mercer County NJ USA
White 46.7% 53.0% 58.9%
African American 19.1% 12.4% 12.1%
American Indian 0.1% 0.1% 0.6%
Asian 12.1% 9.8% 5.7%
Hawaiian 0.0% 0.0% 0.2%
Other 0.2% 0.7% 0.4%
Two Or More 2.5% 2.8% 3.5%
Hispanic 19.2% 21.2% 18.7%

Household Income For Mercer County, New Jersey

  • 5.4% of households in Mercer County earn Less than $10,000.

  • 4.1% of households in Mercer County earn $10,000 to $14,999.

  • 5.2% of households in Mercer County earn $15,000 to $24,999.

  • 5.4% of households in Mercer County earn $25,000 to $34,999.

  • 8.3% of households in Mercer County earn $35,000 to $49,999.

  • 12.1% of households in Mercer County earn $50,000 to $74,999.

  • 12.5% of households in Mercer County earn $75,000 to $99,999.

  • 17.5% of households in Mercer County earn $100,000 to $149,999.

  • 11.0% of households in Mercer County earn $150,000 to $199,999.

  • 18.6% of households in Mercer County earn $200,000 or more.

Less than $10,000
5.4% (20,706)
$10,000 to $14,999
4.1% (15,772)
$15,000 to $24,999
5.2% (20,032)
$25,000 to $34,999
5.4% (20,813)
$35,000 to $49,999
8.3% (31,732)
$50,000 to $74,999
12.1% (46,243)
$75,000 to $99,999
12.5% (47,986)
$100,000 to $149,999
17.5% (67,009)
$150,000 to $199,999
11.0% (42,102)
$200,000 or more
18.6% (71,332)
Income Mercer County NJ USA
Less than $10,000 5.4% 4.1% 4.9%
$10,000 to $14,999 4.1% 3.0% 3.8%
$15,000 to $24,999 5.2% 5.4% 7.0%
$25,000 to $34,999 5.4% 5.7% 7.4%
$35,000 to $49,999 8.3% 8.2% 10.7%
$50,000 to $74,999 12.1% 13.2% 16.1%
$75,000 to $99,999 12.5% 11.6% 12.8%
$100,000 to $149,999 17.5% 18.0% 17.1%
$150,000 to $199,999 11.0% 11.5% 8.8%
$200,000 or more 18.6% 19.2% 11.4%

Highest level of educational attainment in Mercer County for adults over 25

  • 4.0% of adults in Mercer County completed < 9th grade.

  • 6.0% of adults in Mercer County completed 9-12th grade.

  • 25.0% of adults in Mercer County completed high school / ged.

  • 14.0% of adults in Mercer County completed some college.

  • 6.0% of adults in Mercer County completed associate's degree.

  • 24.0% of adults in Mercer County completed bachelor's degree.

  • 14.0% of adults in Mercer County completed master's degree.

  • 3.0% of adults in Mercer County completed professional degree.

  • 4.0% of adults in Mercer County completed doctorate degree.

< 9th Grade
4% (15,349)
9-12th Grade
6% (23,023)
High School / GED
25% (95,933)
Some College
14% (53,722)
Associate's Degree
6% (23,023)
Bachelor's Degree
24% (92,095)
Master's Degree
14% (53,722)
Professional Degree
3% (11,511)
Doctorate Degree
4% (15,349)
Education Mercer County NJ USA
< 9th Grade 4% 3% 3%
9-12th Grade 6% 5% 6%
High School / GED 25% 26% 26%
Some College 14% 16% 20%
Associate's Degree 6% 7% 9%
Bachelor's Degree 24% 25% 21%
Master's Degree 14% 12% 10%
Professional Degree 3% 3% 2%
Doctorate Degree 4% 2% 2%

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