Maryland Gazetteer
ZIP Code 21657 has segments in 3 Counties / Independent Cities (Caroline, Queen Annes, Talbot).
The ZIP Code maps and database are updated 4 times per year.
Database updated: March 1, 2026, Maps updated: May 1, 2024.
Source: 2020-2024 American Community Survey 5-Year Estimates
POPULATION | |
|---|---|
| Total Population | 1,354 (100%) |
| Population Density | 45 per sq mi |
| Diversity Index1 | 48 |
INCOME | |
| Median Household Income | $104,940 |
| Per Capita Income | $39,161 |
| Median Home Value | $359,500 |
HOUSING | |
|---|---|
| Total HU (Housing Units) | 532 (100%) |
| Owner Occupied HU | 457 (85.9%) |
| Renter Occupied HU | 65 (12.2%) |
| Vacant Housing Units | 10 (1.9%) |
HOUSEHOLDS | |
| Total Households | 522 |
| Average Household Size | 2.59 |
| Family Households | 429 (82.2%) |
The table below compares 21657 to the other 33,772 ZIP Codes in the United States by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
| Variable Description | Rank | Percentile |
|---|---|---|
| Total Population | # 21129 | 37th |
| Population Density | # 20292 | 40th |
| Median Household Income | # 5422 | 84th |
| Per Capita Income | # 14050 | 58th |
| Diversity Index | # 8508 | 75th |
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.
