Wilmington, Mercer County, PA demographics:
population, income, and more

Total population
1,627
1.7% year-over-year change
Median household income
$84,205/yr
6.9% year-over-year change
Housing units
614
-0.5% year-over-year change

Wilmington population

How many people live in Wilmington

Wilmington is home to 1,627 residents, according to the most recent Census data. Gender-wise, 48.9% of Wilmington locals are male, and 51.1% are female.

Total population
1,627
1.7% year-over-year change
Gender ratio
Male
48.9%
795
Female
51.1%
831
Value Percent YoY change
Male 795 48.9% 1.4%
Female 831 51.1% 1.7%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Wilmington is 36, with the population distributed as follows: about 21.2% are children under 15, then 17.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 19.5% of the population, while another 21.3% fall into the 45 to 64 bracket. Finally, around 20.2% are 65 or older.

Median age
36.4
Age breakdown
Under 15
21.2%
15 to 24
17.8%
25 to 44
19.5%
45 to 64
21.3%
Over 65
20.2%
Value Percent YoY change
Under 15 344 21.2% 1.2%
15 to 24 290 17.8% 9.8%
25 to 44 317 19.5% -0.3%
45 to 64 346 21.3% 2.4%
Over 65 329 20.2% -3.5%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Wilmington, 97% of the population are US-born citizens, while 2.9% have gained naturalized citizenship. At the same time, 0.1% of residents are non-citizens. There’s also a share of 3.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
97%
Non-U.S.-born citizens
2.9%
Non-citizens
0.1%
Value Percent YoY change
U.S.-born citizens 1,578 97% 1.4%
Non-U.S.-born citizens 47 2.9% 17.5%
Non-citizens 2 0.1% -50.0%
Racial breakdown
White
95%
Black or African American
1.1%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
3.4%
Other
0.4%
Value Percent
White 1,545 95%
Black or African American 18 1.1%
Two or more races 56 3.4%
Other 7 0.4%

Households in Wilmington

A peek inside Wilmington households

Wilmington has 569 households, with an average of 3 members in each. Of these, 68.7% are families, while the remaining 31.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
569
1.1% year-over-year change
Average people per household
3
Non-family households
179
Family households
391
Value Percent YoY change
Non-family households 179 31.5% -1.1%
Family households 391 68.7% 2.4%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Wilmington

The housing landscape of Wilmington

Wilmington's housing consists of 614 units, with 76.1% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 5% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3.1% of the housing landscape.

Housing units
614
-0.5% year-over-year change
Housing types
Value Percent
1 unit, detached 468 76.1%
1 unit, attached 31 5%
2 units 17 2.8%
3 or 4 units 32 5.2%
5 to 9 units 18 2.9%
10 to 19 units 20 3.2%
20 to 49 units 6 1%
50 or more units 4 0.6%
Mobile home 19 3.1%
Homes built since 2020
12
100.0% year-over-year change

The age of buildings in Wilmington

In Wilmington, the median construction year is 1971. About 18.4% of homes were built before the 1940s, with another 5.1% going up by 1949. Most development happened in the second half of the 20th century. Then, 11.4% of homes were added from 2000 to 2009, 6.2% between 2010 and 2019, and 2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 113 18.4% -1.7%
Built between 1940 and 1949 31 5.1% -6.1%
Built between 1950 and 1959 64 10.4% -4.5%
Built between 1960 and 1969 89 14.5% 12.7%
Built between 1970 and 1979 108 17.6% 3.9%
Built between 1980 and 1989 34 5.6% -34.6%
Built between 1990 and 1999 54 8.8% 20.0%
Built between 2000 and 2009 70 11.4% -6.7%
Built between 2010 and 2019 38 6.2% -7.3%
Built in 2020 or later 12 2% 100.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Wilmington occupancy rates

Out of the 569 occupied housing units in Wilmington, 77.7% are owner-occupied, while 22.3% are lived in by tenants. Meanwhile, 7.3% of all homes on the local market sit vacant.

Occupied housing units
569
1.1% year-over-year change
Occupancy breakdown
Renter occupied
127
Owner occupied
442
Value Percent YoY
change
Renter occupied 127 22.3% -8.0%
Owner occupied 442 77.7% 4.2%
Unoccupied housing units
7.3%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Wilmington housing costs

Housing costs in Wilmington come to a median of $982 per month, while tenants specifically pay a median gross rent of $874.

Median housing costs per month
$982/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Wilmington
$874/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Wilmington

Wilmington education at a glance

About 36.5% of the population in Wilmington went to high school, while 15.6% pursued college studies. Another 5.7% earned an associate degree and 19.5% hold a bachelor’s. Meanwhile, 12.2% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 126 10.6% 0.8%
High school diploma 434 36.5% -2.5%
College diploma 185 15.6% 10.1%
Associate degree 68 5.7% -5.6%
Bachelor's degree 232 19.5% 0.4%
Graduate degree 145 12.2% 9.0%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Wilmington

How much people earn in Wilmington

The average annual household income in Wilmington was $103,291 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +8.8% change from the previous year. At the same time, the median income stood at $84,205, reflecting a +6.9% shift over the same period.

Average household income in Wilmington
$103,291/year
8.8% year-over-year change
Median household income in Wilmington
$84,205/year
6.9% year-over-year change

Wilmington income by age

In Wilmington, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $122,308. Those with someone between 45 and 64 in charge, often well established professionally, earn $112,222 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $36,563, while those led by someone over 65, many of whom may be retired, have about $53,664 in earnings. Overall, 93.1% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $36,563 61.2%
25 - 44 $122,308 12.3%
45 - 64 $112,222 7.1%
Over 65 $53,664 7.0%
Above poverty level
1,410
Below poverty level
104
Value Percent YoY
change
Above poverty level 1,410 93.1% 4.4%
Below poverty level 104 6.9% -24.6%

Employment in Wilmington

Workforce and job types in Wilmington

76% of the working population are employed in professional or administrative positions, while 24% are in hands-on or service-based jobs. Also, 15.8% run their own businesses, 58.7% are employed by private companies, and 12% work in the public sector.

Workforce demographics

White collar
544
Blue collar
172
Value Percent YoY change
White collar 544 76% 2.3%
Blue collar 172 24% 0.6%
Employer type
Self employees
15.8%
Private companies
58.7%
Governmental workers
12%
Not for profit companies
13.6%
Value Percent YoY change
Self employees 113 15.8% 6.6%
Private companies 420 58.7% 0.7%
Governmental workers 86 12% 8.9%
Not for profit companies 97 13.6% -3.0%

Transportation in Wilmington

How people get around in Wilmington

Commuting methods vary: 90.7% of residents travel by personal vehicle and 5.2% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 528 90.7% -0.9%
Taxicab 20 3.4% 233.3%
Bus or trolleybus 2 0.3% -50.0%
Bicycle 2 0.3% -60.0%
Walk 30 5.2% 25.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Wilmington by zipcode?

Zipcode Population Number of households Median income Average income
16142 5,522 1,932 $84,205 $108,900

Explore more communities

FAQs about Wilmington demographics 

What is the total population of Wilmington?

Wilmington has a total population of 1,627 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +1.7% compared to a year ago.

What is the gender ratio in Wilmington?

The gender ratio in Wilmington is as follows:
  • 48.9% males (795 residents)
  • 51.1% females (831 residents)

What is the median age in Wilmington?

The median age in Wilmington is 36.4.

What is the age distribution of the population in Wilmington?

The age distribution in Wilmington is as follows:
  • Under 15: 21.2% (344 residents)
  • Ages 15-24: 17.8% (290 residents)
  • Ages 25-44: 19.5% (317 residents)
  • Ages 45-64: 21.3% (346 residents)
  • Over 65: 20.2% (329 residents)

What is the racial and ethnic makeup of Wilmington?

The racial and ethnic makeup of Wilmington is as follows:
  • White: 95% (1,545 residents)
  • Black or African American: 1.1% (18 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% ( residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 3.4% (56 residents)
  • Other: 0.4% (7 residents)

What percentage of the population in Wilmington are U.S.-born citizens?

U.S.-born citizens represent 97% of the population in Wilmington.

How many housing units are there in Wilmington?

There are 614 housing units in Wilmington, reflecting a -0.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Wilmington and what is the average household size?

Wilmington has a total of 569 households, with an average of 3 people in each.

What is the median household income in Wilmington?

Wilmington has a median household income of $84,205, representing a +6.9% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Wilmington?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 76% (544 residents)
  • Blue-collar workers: 24% (172 residents)

Places of employment:
  • Self-employed: 15.8% (113 residents)
  • Private companies: 58.7% (420 residents)
  • Governmental workers: 12% (86 residents)
  • Not-for-profit companies: 13.6% (97 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025