ZIP code 17840: Locust Gap, PA
17840 is a ZIP code in Locust Gap, Pennsylvania, mainly in Northumberland County, part of the Sunbury, PA micro area. About 188 people live here.
- Population
- 188
- Median household income
- —
- Typical home value
- —
- Median rent
- —gross, per month
- Median age
- 25.3
- Homeowners
- 74.1%of occupied homes
Shaded: ZIP code 17840's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 17840 details
| City | Locust Gap |
|---|---|
| State | Pennsylvania |
| County | Northumberland County |
| Metro area | Sunbury, PA |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 2 sq mi |
| Population density | 94 people per sq mi |
| Bachelor's degree or higher | 0% of adults 25+ |
| Center coordinates | 40.77445, -76.42643 |
ZIP codes near 17840
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 17851 | Mount Carmel, PA | 2.0 mi | 7,234 |
| 17834 | Kulpmont, PA | 2.2 mi | 3,480 |
| 17943 | Lavelle, PA | 2.6 mi | 42 |
| 17832 | Marion Heights, PA | 2.6 mi | 578 |
| 17945 | Locustdale, PA | 2.8 mi | 133 |
| 17921 | Ashland, PA | 3.8 mi | 6,931 |
| 17888 | Wilburton, PA | 4.0 mi | 446 |
| 17858 | Numidia, PA | 4.7 mi | 111 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
About ZIP code 17840
What city is ZIP code 17840?
ZIP code 17840 is in Locust Gap, PA, in Northumberland County.
What county is ZIP code 17840 in?
17840 is mainly in Northumberland County, Pennsylvania.
What is the population of ZIP code 17840?
About 188 people live in ZIP code 17840, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 17840 in?
17840 is in Eastern Time (UTC−5). It observes daylight saving time.