First three digits · Virginia
ZIP Codes Starting with
37 ZIP codes start with 221, sorted at the Northern, VA (SCF 220) sectional center (USPS labeling list L005, effective October 1, 2026) in Virginia: 16 residential ZIP codes across 3 counties and 21 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 221 mean?
The first digit, 2, is one of ten national areas (District of Columbia, Maryland, North Carolina, South Carolina, Virginia and West Virginia). The first three, 221, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 221 to the Northern, VA (SCF 220) facility. The last two digits pick the delivery area. By residents, the largest town names among the 221 ZIP codes are Woodbridge, Springfield, Vienna, McLean, Oakton and Triangle.
The same facility sorts 4 prefixes, 116 ZIP codes in all: 220, 221, 222, 223.
Where are the 221 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 221
| County | ||||||
|---|---|---|---|---|---|---|
| 22101 | McLean | Fairfax County | 30,953 | 2,362 | $250k+ | $1.45M |
| 22102 | McLean | Fairfax County | 29,184 | 2,371 | $154k | $956k |
| 22103 | West McLean | Fairfax County | PO Box or unique | – | – | – |
| 22106 | McLean | Fairfax County | PO Box or unique | – | – | – |
| 22107 | McLean | Fairfax County | PO Box or unique | – | – | – |
| 22108 | McLean | Fairfax County | PO Box or unique | – | – | – |
| 22109 | McLean | Fairfax County | PO Box or unique | – | – | – |
| 22116 | Merrifield | Fairfax County | PO Box or unique | – | – | – |
| 22118 | Merrifield | Fairfax County | PO Box or unique | – | – | – |
| 22119 | Merrifield | Fairfax County | PO Box or unique | – | – | – |
| 22121 | Mount Vernon | Fairfax County | PO Box or unique | – | – | – |
| 22122 | Newington | Fairfax County | PO Box or unique | – | – | – |
| 22124 | Oakton | Fairfax County | 18,091 | 1,752 | $218k | $998k |
| 22125 | Occoquan | Prince William County | 681 | 4,480 | $161k | $494k |
| 22134 | Quantico | Stafford County | 8,310 | 176 | $70k | $322k |
| 22135 | Quantico | Prince William County | PO Box or unique | – | – | – |
| 22150 | Springfield | Fairfax County | 27,955 | 3,667 | $123k | $636k |
| 22151 | Springfield | Fairfax County | 17,017 | 3,345 | $156k | $656k |
| 22152 | Springfield | Fairfax County | 28,814 | 4,779 | $166k | $648k |
| 22153 | Springfield | Fairfax County | 32,664 | 3,687 | $174k | $694k |
| 22156 | Springfield | Fairfax County | PO Box or unique | – | – | – |
| 22158 | Springfield | Fairfax County | PO Box or unique | – | – | – |
| 22159 | Springfield | Fairfax County | PO Box or unique | – | – | – |
| 22160 | Springfield | Fairfax County | PO Box or unique | – | – | – |
| 22161 | Springfield | Fairfax County | PO Box or unique | – | – | – |
| 22172 | Triangle | Prince William County | 11,490 | 558 | $110k | $500k |
| 22180 | Vienna | Fairfax County | 26,568 | 4,509 | $177k | $941k |
| 22181 | Vienna | Fairfax County | 15,760 | 2,823 | $212k | $998k |
| 22182 | Vienna | Fairfax County | 27,783 | 2,224 | $205k | $1.13M |
| 22183 | Vienna | Fairfax County | PO Box or unique | – | – | – |
| 22185 | Vienna | Fairfax County | PO Box or unique | – | – | – |
| 22191 | Woodbridge | Prince William County | 73,623 | 4,772 | $109k | $454k |
| 22192 | Woodbridge | Prince William County | 59,794 | 3,114 | $127k | $486k |
| 22193 | Woodbridge | Prince William County | 81,588 | 4,463 | $117k | $445k |
| 22194 | Woodbridge | Prince William County | PO Box or unique | – | – | – |
| 22195 | Woodbridge | Prince William County | PO Box or unique | – | – | – |
| 22199 | Lorton | Fairfax County | PO Box or unique | – | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.