Strongest migration-inflow ZIP codes in Maryland
Top 25 ZIP codes in Maryland with the strongest IRS net migration inflows. #1 is 20906 (Aspen Hill) at about +4,184. Compare migration signals on US5.
These ZIP codes show the strongest positive IRS net migration figures in Maryland on US5’s published series — a directional signal of inflow versus outflow.
Strongest inflows: 20906 (Aspen Hill) at about +4,184; 20878 (Gaithersburg) at about +3,833; 21234 (Carney) at about +3,819.
Open any ZIP for a full demographics, income, and housing profile, or return to the Maryland state page for the complete ZIP table.
Ranked ZIP codes
| # | ZIP | City | County | Net migration | Population | Income | Home value |
|---|---|---|---|---|---|---|---|
| 1 | 20906 | Aspen Hill | Montgomery County | +4,184 | 71,216 | $92,964 | $440,600 |
| 2 | 20878 | Gaithersburg | Montgomery County | +3,833 | 65,236 | $142,062 | $675,200 |
| 3 | 21234 | Carney | Baltimore County | +3,819 | 65,010 | $83,139 | $276,000 |
| 4 | 21740 | Hagerstown | Washington County | +3,710 | 63,140 | $59,410 | $241,600 |
| 5 | 20874 | Darnestown | Montgomery County | +3,656 | 62,233 | $109,648 | $385,300 |
| 6 | 21122 | Lake Shore | Anne Arundel County | +3,618 | 61,589 | $121,732 | $412,100 |
| 7 | 21117 | Owings Mills | Baltimore County | +3,604 | 61,337 | $100,934 | $370,700 |
| 8 | 21222 | Dundalk | Baltimore County | +3,462 | 58,935 | $61,934 | $200,800 |
| 9 | 20904 | Colesville | Montgomery County | +3,363 | 57,244 | $93,322 | $533,500 |
| 10 | 21061 | Glen Burnie | Anne Arundel County | +3,317 | 56,453 | $86,081 | $326,000 |
| 11 | 20744 | Fort Washington | Prince George's County | +3,304 | 56,236 | $124,838 | $418,100 |
| 12 | 20902 | Wheaton | Montgomery County | +3,124 | 53,170 | $111,408 | $531,200 |
| 13 | 20772 | Croom | Prince George's County | +3,100 | 52,768 | $135,576 | $443,500 |
| 14 | 20774 | Brock Hall | Prince George's County | +3,068 | 52,221 | $128,392 | $439,500 |
| 15 | 21215 | Baltimore | Baltimore city | +3,060 | 52,078 | $47,606 | $189,900 |
| 16 | 20783 | Adelphi | Prince George's County | +2,990 | 50,893 | $87,052 | $400,400 |
| 17 | 20850 | Rockville | Montgomery County | +2,959 | 50,365 | $122,691 | $687,200 |
| 18 | 21206 | Baltimore | Baltimore city | +2,932 | 49,901 | $62,965 | $213,700 |
| 19 | 20854 | Potomac | Montgomery County | +2,920 | 49,694 | $250,001 | $1,105,300 |
| 20 | 21207 | Lochearn | Baltimore County | +2,914 | 49,599 | $64,284 | $248,400 |
| 21 | 21228 | Catonsville | Baltimore County | +2,903 | 49,417 | $107,714 | $389,200 |
| 22 | 20852 | North Bethesda | Montgomery County | +2,812 | 47,857 | $121,496 | $646,100 |
| 23 | 21702 | Frederick | Frederick County | +2,787 | 47,437 | $104,659 | $384,800 |
| 24 | 21043 | Ellicott City | Howard County | +2,769 | 47,134 | $141,846 | $607,300 |
| 25 | 21224 | Baltimore | Baltimore city | +2,758 | 46,949 | $86,209 | $281,400 |
Frequently asked questions
Which ZIP codes in Maryland have the strongest migration inflows?
By IRS net migration, 20906 (Aspen Hill) leads this board at about +4,184. Positive values signal more inflow than outflow in the published series.
How does US5 rank ZIP codes in Maryland?
We rank indexable ZIP codes with positive IRS net migration from high to low (with a population floor).
Where can I explore all ZIP codes in Maryland?
Visit the Maryland state page for the full ZIP table, demographics summary, and sortable income/housing columns.