ZIP Code 21555 - Oldtown Maryland
Overview
ZIP Code 21555 is located in Oldtown Maryland. Portions of 21555 are also in Spring Gap. 21555 is entirely within Allegany County. Regionally, 21555 is located in the Hagerstown Area.
ZIP Code 21555 Quick Stats
| ZIP Code Name | Oldtown |
| Primary County | Allegany County |
| ZIP Code Type | Standard |
| Population (2022) | 1,515 |
| Area Code(s) | 240 / 301 |
| Current Time | EDT |
ZIP Code 21555 Map
21555 Demographics
21555 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Maryland based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 21555 is White. The current unemployment level in 21555 is 4.4%.
| Population | 1,515 |
| Population Growth Rate | -17.09% |
| Population Density | 15 People per Square Mile |
| Total Households | 586 |
| Median Household Income (2021) | $52,083 |
| Average Adjusted Gross Income (2021) | $149,230 |
| Current Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 6% |
| Majority Race/Ethnicity | White - 99.72% |
21555 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 1,427 | 99.72% |
| Black | 4 | 0.28% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
21555 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 109 | 10.94% |
| Bachelor Degree | 70 | 7.03% |
| High School Diploma | 426 | 42.77% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 31 | 3.11% |
| 1 or More Years of College | 186 | 18.67% |
| Associates Degree | 130 | 13.05% |
| Masters Degree | 16 | 1.61% |
| Professional Degree | 18 | 1.81% |
| Doctorate Degree | 10 | 1% |
21555 Geography
| Coordinates | 39.58814621, -78.56222534 |
| Adjacent ZIP Codes | |
| Cities/Towns in 21555 | |
| Region | Hagerstown Area |
| Metropolitan/Micropolitan Stat Area | Cumberland, MD-WV |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| Area | 102 Square Miles |
21555 Schools
| School Districts in 21555 | |
| Elementary Schools in 21555 | |
| Middle Schools in 21555 | |
| High Schools in 21555 |
21555 Weather and Climate Data
| Plant Hardiness Zone | Zone 6b: -5F to 0F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 67d - Northern Dissected Ridges and Knobs | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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