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: October 1, 2025, Maps updated: May 1, 2024.
POPULATION | |
|---|---|
| Total Population | 1,143 (100%) |
| Population in Households | 1,143 (100.0%) |
| Population in Families | 930 (81.4%) |
| Population in Group Quarters1 | 0 |
| Population Density | 37 |
| Diversity Index2 | 28 |
INCOME | |
| Median Household Income | $110,373 |
| Average Household Income | $137,511 |
| % of Income for Mortgage4 | 25% |
| Per Capita Income | $54,258 |
| Wealth Index5 | 137 |
| Socioeconomic Status Index6 | Moderate (59.8) |
HOUSING | |
|---|---|
| Total HU (Housing Units) | 480 (100%) |
| Owner Occupied HU | 377 (78.5%) |
| Renter Occupied HU | 74 (15.4%) |
| Vacant Housing Units | 29 ( 6.0%) |
| Median Home Value | $443,750 |
| Average Home Value | $531,267 |
| Housing Affordability Index3 | 95 |
HOUSEHOLDS | |
| Total Households | 451 |
| Average Household Size | 2.53 |
| Family Households | 322 |
| Average Family Size | 3.00 |
GROWTH RATE / YEAR |
2020-2025 | 2025-2030 |
|---|---|---|
| Population | -0.23% | 0.52% |
| Households | 0.38% | 0.48% |
| Families | 0.85% | |
| Median Household Income | 2.77% | |
| Per Capita Income | 2.01% | |
| Owner Occupied HU | 1.34% |
The table below compares 21657 to the other 458 ZIP Codes in Maryland by rank and percentile using July 1, 2025 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 | # 338 | 26th |
| Population Density | # 424 | 8th |
| Median Household Income | # 201 | 56th |
| Housing Affordability Index | # 313 | 68th |
| Per Capita Income | # 188 | 59th |
| Diversity Index | # 375 | 18th |
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.