15 ZIP Code Tabulation Areas in Carroll County, Maryland. The population-weighted median household income is about $126,380, the median home value about $461,258, and 84.8% of occupied homes are owner-occupied.
- 15
- ZIP codes
- 246.8K
- Population
- 53
- Data points
Carroll County at a glance
- $126,380
- Median household income
- $461,258
- Median home value
- 42.1
- Median age
- 84.8%
- Owner-occupied
- 94,497
- Housing units
Income, home value, and age are population-weighted averages of the ZIP-level medians in the file. Counts are exact.
Top 5 Carroll County ZIP codes by median household income| # | ZIP | City | Population | Homeowner % | Median HH $ |
|---|
| 1 | 21104 | Eldersburg | 6,052 | 97% | $191,804 |
| 2 | 21797 | Eldersburg | 8,643 | 91.7% | $189,241 |
| 3 | 21771 | Green Valley | 33,031 | 94% | $157,302 |
| 4 | 21784 | Eldersburg | 39,258 | 87.3% | $139,395 |
| 5 | 21102 | Manchester | 12,162 | 89.4% | $135,069 |
Top 5 Carroll County ZIP codes by population| # | ZIP | City | Population | Homeowner % | Median HH $ |
|---|
| 1 | 21784 | Eldersburg | 39,258 | 87.3% | $139,395 |
| 2 | 21157 | Manchester | 38,984 | 76.8% | $104,966 |
| 3 | 21771 | Green Valley | 33,031 | 94% | $157,302 |
| 4 | 21136 | Reisterstown | 32,088 | 79.4% | $118,500 |
| 5 | 21158 | Westminster | 22,083 | 79.2% | $109,827 |
Top 5 Carroll County ZIP codes by Homeowner GDP| # | ZIP | City | Population | Homeowner % | Median HH $ | Homeowner GDP |
|---|
| 1 | 21771 | Green Valley | 33,031 | 94% | $157,302 | $1.7B |
| 2 | 21784 | Eldersburg | 39,258 | 87.3% | $139,395 | $1.6B |
| 3 | 21136 | Reisterstown | 32,088 | 79.4% | $118,500 | $1.2B |
| 4 | 21157 | Manchester | 38,984 | 76.8% | $104,966 | $1.2B |
| 5 | 21158 | Westminster | 22,083 | 79.2% | $109,827 | $734.9M |
Homeowner GDP = owner-occupied units × median household income — a proxy for aggregate homeowner spending power in a ZIP, useful for scoring market opportunity. Not an official economic statistic.
Densest: 21784 (Eldersburg) at 699 people/sq mi. Least dense: 21757 at 76 people/sq mi.
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