First three digits · New York
ZIP Codes Starting with
73 ZIP codes start with 121, sorted at the Albany, NY (SCF 120) sectional center (USPS labeling list L005, effective October 1, 2026) in New York: 68 residential ZIP codes across 11 counties and 5 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 121 mean?
The first digit, 1, is one of ten national areas (Delaware, New York and Pennsylvania). The first three, 121, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 121 to the Albany, NY (SCF 120) facility. The last two digits pick the delivery area. By residents, the largest town names among the 121 ZIP codes are Troy, Rensselaer, Latham, Watervliet, Mechanicville and Waterford.
The same facility sorts 6 prefixes, 346 ZIP codes in all: 120, 121, 122, 123, 128, 129.
Where are the 121 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 121
| County | ||||||
|---|---|---|---|---|---|---|
| 12106 | Kinderhook | Columbia County | 1,864 | 130 | $76k | $278k |
| 12107 | Knox | Albany County | PO Box or unique | – | – | – |
| 12108 | Lake Pleasant | Hamilton County | 350 | 5 | $56k | $339k |
| 12110 | Latham | Albany County | 20,081 | 1,400 | $105k | $340k |
| 12115 | Malden Bridge | Columbia County | 60 | 17 | $92k | – |
| 12116 | Maryland | Otsego County | 1,787 | 45 | $79k | $167k |
| 12117 | Mayfield | Fulton County | 2,871 | 65 | $66k | $209k |
| 12118 | Mechanicville | Saratoga County | 17,069 | 483 | $93k | $346k |
| 12120 | Medusa | Albany County | 600 | 41 | $79k | $310k |
| 12121 | Melrose | Rensselaer County | 2,280 | 118 | $101k | $297k |
| 12122 | Middleburgh | Schoharie County | 3,596 | 35 | $56k | $174k |
| 12123 | Nassau | Rensselaer County | 4,457 | 140 | $109k | $297k |
| 12124 | New Baltimore | Greene County | 298 | 191 | $86k | $343k |
| 12125 | New Lebanon | Columbia County | 1,141 | 71 | $56k | $276k |
| 12128 | Newtonville | Albany County | PO Box or unique | – | – | – |
| 12130 | Niverville | Columbia County | 233 | 428 | $104k | $187k |
| 12131 | North Blenheim | Schoharie County | 183 | 16 | $72k | $165k |
| 12132 | North Chatham | Columbia County | 111 | 221 | – | – |
| 12133 | North Hoosick | Rensselaer County | PO Box or unique | – | – | – |
| 12134 | Northville | Hamilton County | 3,846 | 20 | $78k | $223k |
| 12136 | Old Chatham | Columbia County | 1,043 | 51 | $149k | $472k |
| 12137 | Pattersonville | Schenectady County | 2,077 | 89 | $84k | $272k |
| 12138 | Petersburg | Rensselaer County | 2,695 | 30 | $76k | $192k |
| 12139 | Piseco | Hamilton County | 227 | 1 | $72k | $260k |
| 12140 | Poestenkill | Rensselaer County | 1,512 | 211 | $138k | $302k |
| 12141 | Quaker Street | Schenectady County | PO Box or unique | – | – | – |
| 12143 | Ravena | Albany County | 5,664 | 297 | $95k | $234k |
| 12144 | Rensselaer | Rensselaer County | 22,111 | 1,207 | $91k | $250k |
| 12147 | Rensselaerville | Albany County | 466 | 24 | $86k | $243k |
| 12148 | Rexford | Saratoga County | 4,023 | 257 | $142k | $427k |
| 12149 | Richmondville | Schoharie County | 2,038 | 46 | $51k | $170k |
| 12150 | Rotterdam Junction | Schenectady County | 710 | 597 | $80k | $232k |
| 12151 | Round Lake | Saratoga County | 967 | 371 | $98k | $343k |
| 12153 | Sand Lake | Rensselaer County | 669 | 39 | $90k | $292k |
| 12154 | Schaghticoke | Rensselaer County | 2,777 | 65 | $106k | $251k |
| 12155 | Schenevus | Otsego County | 1,685 | 32 | $62k | $165k |
| 12156 | Schodack Landing | Rensselaer County | 808 | 56 | $108k | $242k |
| 12157 | Schoharie | Schoharie County | 4,713 | 94 | $76k | $223k |
| 12158 | Selkirk | Albany County | 5,878 | 200 | $97k | $315k |
| 12159 | Slingerlands | Albany County | 8,163 | 540 | $128k | $450k |
| 12160 | Sloansville | Schoharie County | 716 | 46 | $70k | $168k |
| 12161 | South Bethlehem | Albany County | 99 | 1,000 | $124k | – |
| 12164 | Speculator | Hamilton County | 539 | 5 | $62k | $227k |
| 12165 | Spencertown | Columbia County | 220 | 130 | $65k | $418k |
| 12166 | Sprakers | Montgomery County | 1,635 | 38 | $95k | $219k |
| 12167 | Stamford | Schoharie County | 2,279 | 43 | $53k | $193k |
| 12168 | Stephentown | Rensselaer County | 1,752 | 57 | $89k | $204k |
| 12169 | Stephentown | Rensselaer County | 417 | 36 | $44k | $210k |
| 12170 | Stillwater | Saratoga County | 5,351 | 169 | $103k | $272k |
| 12172 | Stottville | Columbia County | 176 | 329 | $87k | – |
| 12173 | Stuyvesant | Columbia County | 2,099 | 129 | $77k | $226k |
| 12174 | Stuyvesant Falls | Columbia County | 427 | 390 | $51k | – |
| 12175 | Summit | Schoharie County | 612 | 23 | $90k | $152k |
| 12176 | Surprise | Greene County | 393 | 76 | $64k | $204k |
| 12177 | Tribes Hill | Montgomery County | 387 | 806 | $92k | – |
| 12180 | Troy | Rensselaer County | 53,479 | 951 | $76k | $244k |
| 12181 | Troy | Rensselaer County | PO Box or unique | – | – | – |
| 12182 | Troy | Rensselaer County | 14,867 | 1,089 | $57k | $213k |
| 12183 | Troy | Albany County | 2,970 | 3,965 | $59k | $138k |
| 12184 | Valatie | Columbia County | 7,787 | 198 | $99k | $355k |
| 12185 | Valley Falls | Rensselaer County | 1,709 | 75 | $111k | $211k |
| 12186 | Voorheesville | Albany County | 6,512 | 197 | $112k | $360k |
| 12187 | Warnerville | Schoharie County | 752 | 39 | $78k | $188k |
| 12188 | Waterford | Saratoga County | 10,988 | 845 | $92k | $281k |
| 12189 | Watervliet | Albany County | 18,656 | 2,999 | $65k | $221k |
| 12190 | Wells | Hamilton County | 671 | 4 | $74k | $269k |
| 12192 | West Coxsackie | Greene County | 1,077 | 67 | $106k | $283k |
| 12193 | Westerlo | Albany County | 1,746 | 46 | $108k | $308k |
| 12194 | West Fulton | Schoharie County | 162 | 10 | $91k | $239k |
| 12195 | West Lebanon | Columbia County | 162 | 207 | $149k | $230k |
| 12196 | West Sand Lake | Rensselaer County | 3,880 | 433 | $111k | $317k |
| 12197 | Worcester | Otsego County | 2,298 | 35 | $78k | $165k |
| 12198 | Wynantskill | Rensselaer County | 6,796 | 513 | $113k | $285k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.