ZIP code 18101
Where is ZIP code 18101?
Allentown, Pennsylvania
Lehigh County · Standard ZIP code
ZIP code 18101 belongs to Allentown, Pennsylvania in Lehigh County. 18101 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 484, 610 and 835. About 6,120 people live in the 18101 area, where the median household income is $44,773. The closest ZIP codes are 18025 (Bethlehem, 0.5 mi east), 18102 (Allentown, 0.6 mi northwest) and 18103 (Allentown, 1 mi south).
| ZIP code | 18101 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Allentown |
| State | Pennsylvania (PA) |
| County | Lehigh County |
| Time zone | Eastern Time · now |
| Area codes | 484, 610, 835 |
| Coordinates | 40.6026, -75.4691 map |
| 3-digit prefix | 181 |
Population and income in 18101
| Population | 6,120 · higher than 68% of Pennsylvania ZIP codes |
|---|---|
| People per square mile | 19,935 · higher than 99% of Pennsylvania ZIP codes |
| Median age | 29.1 years · lower than 96% of Pennsylvania ZIP codes |
| Men / women | 52% / 48% |
| Median household income | $44,773 · lower than 95% of Pennsylvania ZIP codes |
| Income per person | $28,551 |
| Below the poverty line | 23% |
| Bachelor’s degree or higher | 23% of adults 25+ |
| Median home value | $171,300 · lower than 60% of Pennsylvania ZIP codes |
| Median rent | $1,430 a month |
| Housing units | 2,786 |
| Households | 2,576 (2 people on average) |
| Owners / renters | 8.3% / 92% |
| Land area | 0.31 sq mi |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 18101. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 18101
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 18025 | Bethlehem, PA | 0.5 mi E | Unique |
| 18102 | Allentown, PA | 0.6 mi NW | Standard |
| 18103 | Allentown, PA | 1 mi S | Standard |
| 18105 | Allentown, PA | 1.2 mi W | PO Box only |
| 18109 | Allentown, PA | 2.8 mi NE | Standard |
| 18104 | Allentown, PA | 2.8 mi W | Standard |
| 18002 | Lehigh Valley, PA | 3.4 mi NE | PO Box only |
| 18003 | Lehigh Valley, PA | 3.4 mi NE | Unique |
| 18001 | Lehigh Valley, PA | 3.5 mi NE | PO Box only |
| 18032 | Catasauqua, PA | 3.7 mi N | Standard |
| 18052 | Whitehall, PA | 4.2 mi NW | Standard |
| 18018 | Bethlehem, PA | 4.4 mi NE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 18101 or measure the distance to another ZIP code.
How to address mail to 18101
123 MAIN ST
ALLENTOWN PA 18101
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (18101-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Allentown, PA
All Allentown ZIP codes with population and income →
Questions
- What city is ZIP code 18101?
- 18101 is a Allentown, Pennsylvania ZIP code.
- What county is 18101 in?
- ZIP code 18101 is in Lehigh County, Pennsylvania.
- What time zone is ZIP code 18101 in?
- 18101 is in the Eastern Time zone (America/New_York).
- What area code is 18101?
- Phone numbers in ZIP code 18101 use area codes 484, 610 and 835.
- What is the population of ZIP code 18101?
- About 6,120 people live in ZIP code 18101, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 18101?
- The median household income in 18101 is $44,773 a year, lower than 95% of Pennsylvania ZIP codes.
- What ZIP codes are near 18101?
- The nearest ZIP codes to 18101 are 18025 (Bethlehem, 0.5 miles), 18102 (Allentown, 0.6 miles), 18103 (Allentown, 1 miles) and 18105 (Allentown, 1.2 miles).