PlainZIP

Mount Pleasant, PA · standard

ZIP Code 15666

Westmoreland County, Pennsylvania - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

16,461
116/sq mi
$68,102
Median income
$163,100
Median home value
22.8%
Bachelor's or higher

The verdict

Mount Pleasant pairs a below-median household income with below-median home values, in a rural, homeowner-dominated area.

44th pct
household income, US ZIPs
31th pct
home value, US ZIPs
116
people per sq mi
77%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 15666 against every reporting US ZIP.

ZIP code 15666 is a mid-sized community (a standard USPS delivery area) in Mount Pleasant, Westmoreland County, Pennsylvania, home to 16,461 residents across 142.4 square miles, a density of 116 people per square mile, in the New York time zone.

ZIP 15666 reports a modest median household income of $68,102 (13% below the Pennsylvania average), while per-capita income is $37,504. The poverty rate stands at 10.4% and the unemployment rate at 3.3%. The typical home here is valued at $163,100 (28% below the state average); renters pay a median of $799 monthly, and 77.1% of units are owner-occupied.

Educational attainment sits below the national norm: 22.8% of adults hold a bachelor's degree or higher, the median age is 50.2, and the average commute is 26 minutes. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Westmoreland County, letting you compare 15666 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 15666

Top 5 sectors by establishment count in Mount Pleasant, PA

Which industries have the most business establishments in ZIP 15666.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 15666, Mount Pleasant, PA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

16,461

Population

142.4

Area (sq mi)

116

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 15666?

50.2

Median Age

48.4%

Male

51.6%

Female

0.5%

Foreign-Born

White 96.9%
African American 0.8%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 2.2%
Hispanic or Latino 0.4%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$68,102

Median Household Income

-13% vs state

$37,504

Per Capita Income

10.4%

Poverty Rate

3.3%

Unemployment Rate

26.1 min

Mean Commute Time

How ZIP 15666 ranks nationally

Mount Pleasant, PA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$68,102 44th percentile higher than 44% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 65.5%
Bachelor's Degree or Higher 22.8%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

7,859

Total Housing Units

7,308

Occupied Units

551

Vacant Units

2.17

Avg Household Size

Occupancy Type

Owner 77.1%
Renter 22.9%

$163,100

Median Home Value

-28% vs state

$799

Median Rent

1962

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 421 business establishments in ZIP 15666, employing approximately 7,829 people with a combined annual payroll of $446,041,000.

421

Businesses

7,829

Employees

$446.0M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Retail trade 75 17.8%
Other services (except public administration) 60 14.3%
Health care and social assistance 59 14.0%
Accommodation and food services 41 9.7%
Manufacturing 36 8.6%
Construction 25 5.9%
Finance and insurance 22 5.2%
Wholesale trade 21 5.0%
Professional, scientific, and technical services 19 4.5%
Real estate and rental and leasing 17 4.0%
Administrative and support and waste management and remediation services 14 3.3%
Transportation and warehousing 13 3.1%
Arts, entertainment, and recreation 7 1.7%
Information 6 1.4%
Management of companies and enterprises 3 0.7%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 15666 vs 15688 →

ZIP 15666 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 15666 ranks the most populous - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 15666 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 15666 ranks #5 of 8 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
15688 Tarrs, PA 641 3.8 mi
15689 United, PA 229 4.7 mi
15621 Calumet, PA 47 4.3 mi
15612 Alverton, PA 474 4.7 mi
15616 Armbrust, PA 23 5.3 mi
15610 Acme, PA 3,738 5.4 mi
15639 Hunker, PA 2,301 5.5 mi
15676 Pleasant Unity, PA 437 6.4 mi
15631 Everson, PA 1,075 6.0 mi
15683 Scottdale, PA 8,248 5.9 mi

More ZIP Codes in Westmoreland County

15601 standard
Greensburg, PA
Pop: 59,483
15642 standard
Irwin, PA
Pop: 45,286
15068 standard
New Kensington, PA
Pop: 38,785
15650 standard
Latrobe, PA
Pop: 28,432
15644 standard
Jeannette, PA
Pop: 18,836
15012 standard
Belle Vernon, PA
Pop: 15,905

Related Areas

Westmoreland County Mount Pleasant, PA Pennsylvania

Frequently Asked Questions

What county is ZIP code 15666 in? ▼
ZIP code 15666 (Mount Pleasant) is located in Westmoreland County, Pennsylvania. Westmoreland County contains multiple ZIP codes, see the full list at /counties/westmoreland-pa.
What is the population of ZIP code 15666? ▼
ZIP code 15666 in Mount Pleasant, PA has a population of 16,461 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 15666? ▼
The median household income in ZIP 15666 is $68,102, which is 11% below the national average of $76,288.
What is the average home value in ZIP 15666? ▼
The median home value in ZIP 15666 is $163,100, which is 41% below the national average of $278,155.
What is the demographic makeup of ZIP 15666? ▼
The largest racial group in ZIP 15666 is White at 96.9%. Hispanic or Latino residents make up 0.4% of the population.
How many businesses are in ZIP code 15666? ▼
ZIP code 15666 has 421 business establishments employing approximately 7,829 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 15666? ▼
The top industries by establishment count in ZIP 15666 are: Retail trade (75), Other services (except public administration) (60), Health care and social assistance (59). There are 15 industry sectors represented in total.
What is the education level in ZIP code 15666? ▼
In ZIP code 15666, 65.5% of residents aged 25+ have a high school diploma or higher, and 22.8% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 15666? ▼
The mean commute time for workers in ZIP code 15666 is 26.1 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 15666? ▼
In ZIP code 15666, approximately 77.1% of occupied housing units are owner-occupied and 22.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 15666? ▼
The poverty rate in ZIP code 15666 is 10.4% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.