ZIP Code 02638 - Dennis Massachusetts
Overview
ZIP Code 02638 is located in Dennis Massachusetts. Portions of 02638 are also in East Dennis and Dennis (town). 02638 is entirely within Barnstable County. Regionally, 02638 is located in Metro Boston.
ZIP Code 02638 Quick Stats
| ZIP Code Name | Dennis |
| Primary County | Barnstable County |
| ZIP Code Type | Standard |
| Population (2022) | 3,146 |
| Area Code(s) | 508 / 774 |
| Current Time | EDT |
ZIP Code 02638 Map
02638 Demographics
02638 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in Massachusetts based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 02638 is White. The current unemployment level in 02638 is 4.6%.
| Population | 3,146 |
| Population Growth Rate | 5.61% |
| Population Density | 493 People per Square Mile |
| Total Households | 1,667 |
| Percentage High Income Households | 5.8% |
| Median Household Income (2021) | $100,063 |
| Average Adjusted Gross Income (2021) | $726,360 |
| Current Unemployment Rate (May 2026) | 4.6% |
| Sales Tax Rate (2025) | 6.2% |
| Majority Race/Ethnicity | White - 94.65% |
02638 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 2,919 | 94.65% |
| Black | 36 | 1.17% |
| Hispanic | 17 | 0.55% |
| Asian | 34 | 1.1% |
| Native American | 78 | 2.53% |
| Hawaiian/Pac. Islander | 0 | 0% |
02638 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 124 | 4.44% |
| Bachelor Degree | 865 | 30.96% |
| High School Diploma | 586 | 20.97% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 81 | 2.9% |
| 1 or More Years of College | 437 | 15.64% |
| Associates Degree | 218 | 7.8% |
| Masters Degree | 426 | 15.25% |
| Professional Degree | 28 | 1% |
| Doctorate Degree | 29 | 1.04% |
02638 Geography
| Coordinates | 41.7337532, -70.19234467 |
| Adjacent ZIP Codes | |
| Cities/Towns in 02638 | |
| Region | Metro Boston |
| Metropolitan/Micropolitan Stat Area | Barnstable Town, MA |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| Area | 6 Square Miles |
02638 Schools
| School Districts in 02638 |
02638 Weather and Climate Data
| Plant Hardiness Zone | Zone 7a: 0F to 5F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfb - Humid Continental Mild Summer, Wet All Year | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 84a - Cape Cod and Islands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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