ZIP code 15666
Where is ZIP code 15666?
Mount Pleasant, Pennsylvania
Westmoreland County · Standard ZIP code
ZIP code 15666 belongs to Mount Pleasant, Pennsylvania in Westmoreland County. 15666 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 724 and 878. About 15,980 people live in the 15666 area, where the median household income is $68,102. The closest ZIP codes are 15621 (Calumet, 2.9 mi northeast), 15674 (Norvelt, 3.2 mi northeast) and 15689 (United, 3.3 mi northeast).
| ZIP code | 15666 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Mount Pleasant |
| Also accepted | Mt Pleasant |
| State | Pennsylvania (PA) |
| County | Westmoreland County |
| Time zone | Eastern Time · now |
| Area codes | 724, 878 |
| Coordinates | 40.1742, -79.5134 map |
| 3-digit prefix | 156 |
Population and income in 15666
| Population | 15,980 · higher than 85% of Pennsylvania ZIP codes |
|---|---|
| People per square mile | 299 · higher than 53% of Pennsylvania ZIP codes |
| Median age | 50.2 years · higher than 77% of Pennsylvania ZIP codes |
| Men / women | 48% / 52% |
| Median household income | $68,102 · lower than 57% of Pennsylvania ZIP codes |
| Income per person | $37,504 |
| Below the poverty line | 10% |
| Bachelor’s degree or higher | 23% of adults 25+ |
| Median home value | $163,100 · lower than 64% of Pennsylvania ZIP codes |
| Median rent | $799 a month |
| Housing units | 7,859 |
| Households | 7,308 (2.17 people on average) |
| Owners / renters | 77% / 23% |
| Land area | 53.46 sq mi (plus 0.19 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 15666. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 15666
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 15621 | Calumet, PA | 2.9 mi NE | PO Box only |
| 15674 | Norvelt, PA | 3.2 mi NE | PO Box only |
| 15689 | United, PA | 3.3 mi NE | PO Box only |
| 15688 | Tarrs, PA | 3.8 mi W | Standard |
| 15616 | Armbrust, PA | 4 mi NW | PO Box only |
| 15639 | Hunker, PA | 4.6 mi NW | Standard |
| 15612 | Alverton, PA | 5.2 mi SW | Standard |
| 15676 | Pleasant Unity, PA | 5.7 mi NE | PO Box only |
| 15697 | Youngwood, PA | 5.8 mi NW | Standard |
| 15672 | New Stanton, PA | 5.9 mi NW | Standard |
| 15679 | Ruffs Dale, PA | 6.1 mi W | Standard |
| 15683 | Scottdale, PA | 6.5 mi SW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 15666 or measure the distance to another ZIP code.
How to address mail to 15666
123 MAIN ST
MOUNT PLEASANT PA 15666
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts MT PLEASANT as the city name for 15666. Adding the 4-digit ZIP+4 code (15666-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 15666?
- 15666 is a Mount Pleasant, Pennsylvania ZIP code. Mt Pleasant is also accepted as the city name.
- What county is 15666 in?
- ZIP code 15666 is in Westmoreland County, Pennsylvania.
- What time zone is ZIP code 15666 in?
- 15666 is in the Eastern Time zone (America/New_York).
- What area code is 15666?
- Phone numbers in ZIP code 15666 use area codes 724 and 878.
- What is the population of ZIP code 15666?
- About 15,980 people live in ZIP code 15666, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 15666?
- The median household income in 15666 is $68,102 a year, lower than 57% of Pennsylvania ZIP codes.
- What ZIP codes are near 15666?
- The nearest ZIP codes to 15666 are 15621 (Calumet, 2.9 miles), 15674 (Norvelt, 3.2 miles), 15689 (United, 3.3 miles) and 15688 (Tarrs, 3.8 miles).