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 High-density area
- $68,102
- Median income Near-median income area
- $163,100
- Median home value Below-median home value
- 22.8%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
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
- 31st 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 average Pennsylvania ZIP), while per-capita income is $37,504. The poverty rate is 10.4%, with unemployment at 3.3%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $163,100 (28% below the average Pennsylvania ZIP), and median rent is $799; owner occupancy is 77.1%.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Westmoreland County, so 15666 can be compared with both its immediate and county-level context.
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.
- Retail trade
Retail trade
75 establishments
- Other services (except public administration)
Other services (except public administration)
60 establishments
- Health care and social assistance
Health care and social assistance
59 establishments
- Accommodation and food services
Accommodation and food services
41 establishments
- Manufacturing
Manufacturing
36 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, 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
Who lives in ZIP 15666?
50.2
Median Age
48.4%
Male
51.6%
Female
0.5%
Foreign-Born
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 ZIP avg
$37,504
Per Capita Income
10.4%
Poverty Rate
3.3%
Unemployment Rate
26.1 min
Mean Commute Time
How ZIP 15666 ranks among Pennsylvania ZIPs
Mount Pleasant, PA household income vs. every Pennsylvania ZIP code
Median household income among 1,642 reporting Pennsylvania ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$68,102 43rd percentile higher than 43% of 1,642 Pennsylvania ZIPs
Each bar is a $20K-wide band; taller bars hold more Pennsylvania 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
7,859housing units
7,859
Total Housing Units
7,308
Occupied Units
551
Vacant Units
2.17
Avg Household Size
Occupancy Type
$163,100
Median Home Value
-28% vs state ZIP avg
$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.
- 15666
Mount Pleasant (15666)
16,461 residents
- 15683
Scottdale (15683)
8,248 residents
- 15610 3,738
Acme (15610)
3,738 residents
- 15639 2,301
Hunker (15639)
2,301 residents
- 15631 1,075
Everson (15631)
1,075 residents
- 15688 641
Tarrs (15688)
641 residents
- 15612 474
Alverton (15612)
474 residents
- 15676 437
Pleasant Unity (15676)
437 residents
- 15689 229
United (15689)
229 residents
What this shows Among its immediate neighbors, ZIP 15666 ranks the most populous - useful context the national average alone can't give.
ZIP 15666 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 15616
Armbrust (15616)
$115,648 median income
- 15688
Tarrs (15688)
$80,938 median income
- 15639
Hunker (15639)
$79,843 median income
- 15610
Acme (15610)
$72,938 median income
- 15666
Mount Pleasant (15666)
$68,102 median income
- 15612
Alverton (15612)
$59,018 median income
- 15631
Everson (15631)
$52,727 median income
- 15683
Scottdale (15683)
$51,913 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 15666, both outside PA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (16,461 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Westmoreland County
Related Areas
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.
Related
Take this with you
What to do with ZIP 15666's numbers, next.
- See how ZIP 15666 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Mount Pleasant, PA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.