ZIP Code 18631 - Mifflinville Pennsylvania
Overview
ZIP Code 18631 is located in Mifflinville Pennsylvania. Portions of 18631 are also in Mifflin Township (Columbia County). 18631 is entirely within Columbia County. Regionally, 18631 is located in the Scranton-Wilkes-Barre Area.
ZIP Code 18631 Quick Stats
| ZIP Code Name | Mifflinville |
| Primary County | Columbia County |
| ZIP Code Type | PO Box |
| Population (2022) | 1,134 |
| Area Code(s) | 272 / 570 |
| Current Time | EDT |
ZIP Code 18631 Map
18631 Demographics
18631 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Pennsylvania. The majority race/ethnicity residing in 18631 is White. The current unemployment level in 18631 is 4.1%.
| Population | 1,134 |
| Population Growth Rate | -29.76% |
| Population Density | 610 People per Square Mile |
| Total Households | 476 |
| Percentage High Income Households | 2.7% |
| Median Household Income (2021) | $46,250 |
| Current Unemployment Rate (May 2026) | 4.1% |
| Sales Tax Rate (2025) | 6% |
| Majority Race/Ethnicity | White - 97.41% |
18631 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 904 | 97.41% |
| Black | 0 | 0% |
| Hispanic | 24 | 2.59% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
18631 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 6 | 0.8% |
| Bachelor Degree | 95 | 12.7% |
| High School Diploma | 438 | 58.56% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 17 | 2.27% |
| 1 or More Years of College | 94 | 12.57% |
| Associates Degree | 45 | 6.02% |
| Masters Degree | 36 | 4.81% |
| Professional Degree | 9 | 1.2% |
| Doctorate Degree | 8 | 1.07% |
18631 Geography
| Coordinates | 41.02439499, -76.32671356 |
| Adjacent ZIP Codes | |
| Cities/Towns in 18631 | |
| Region | Scranton-Wilkes-Barre Area |
| Metropolitan/Micropolitan Stat Area | Bloomsburg-Berwick, PA |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| Area | 2 Square Miles |
18631 Schools
| School Districts in 18631 | |
| Elementary Schools in 18631 | |
| Middle Schools in 18631 |
18631 Weather and Climate Data
| Plant Hardiness Zone | Zone 6b: -5F to 0F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfb - Humid Continental Mild Summer, Wet All Year | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 67b - Northern Shale Valleys | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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