Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — PREFIX/121

ZIP codes starting with 121

ZIP codes
73
States
NY
Largest city
Troy, NY
Population
280,667

The first three digits of a ZIP code identify a sectional center facility — the postal processing plant that sorts mail for the area. It is a mail-routing grouping, not an administrative boundary.

Every ZIP code in 121xx

ZIP codes starting with 121
ZIP City Type Population Median income Median home
12106 Kinderhook , NY Standard 1,864 $75,714 $278,100
12107 Knox , NY No street area — — —
12108 Lake Pleasant , NY Standard 350 $55,625 $339,100
12110 Latham , NY Standard 20,081 $105,024 $340,100
12115 Malden Bridge , NY Standard 60 $91,875 —
12116 Maryland , NY Standard 1,787 $78,986 $167,200
12117 Mayfield , NY Standard 2,871 $66,000 $208,500
12118 Mechanicville , NY Standard 17,069 $92,710 $345,800
12120 Medusa , NY Standard 600 $78,917 $309,500
12121 Melrose , NY Standard 2,280 $100,461 $297,400
12122 Middleburgh , NY Standard 3,596 $55,875 $174,300
12123 Nassau , NY Standard 4,457 $108,878 $297,000
12124 New Baltimore , NY Standard 298 $85,461 $343,200
12125 New Lebanon , NY Standard 1,141 $55,625 $275,900
12128 Newtonville , NY No street area — — —
12130 Niverville , NY Standard 233 $104,286 $186,800
12131 North Blenheim , NY Standard 183 $71,563 $165,000
12132 North Chatham , NY Standard 111 — —
12133 North Hoosick , NY No street area — — —
12134 Northville , NY Standard 3,846 $77,928 $222,600
12136 Old Chatham , NY Standard 1,043 $148,750 $471,900
12137 Pattersonville , NY Standard 2,077 $83,879 $271,500
12138 Petersburg , NY Standard 2,695 $75,833 $191,900
12139 Piseco , NY Standard 227 $71,563 $260,300
12140 Poestenkill , NY Standard 1,512 $138,393 $301,600
12141 Quaker Street , NY No street area — — —
12143 Ravena , NY Standard 5,664 $95,101 $234,000
12144 Rensselaer , NY Standard 22,111 $90,738 $249,700
12147 Rensselaerville , NY Standard 466 $85,875 $243,100
12148 Rexford , NY Standard 4,023 $141,984 $427,400
12149 Richmondville , NY Standard 2,038 $50,608 $169,500
12150 Rotterdam Junction , NY Standard 710 $79,776 $231,600
12151 Round Lake , NY Standard 967 $98,309 $342,800
12153 Sand Lake , NY Standard 669 $89,861 $291,700
12154 Schaghticoke , NY Standard 2,777 $106,136 $251,300
12155 Schenevus , NY Standard 1,685 $62,361 $164,700
12156 Schodack Landing , NY Standard 808 $108,274 $242,000
12157 Schoharie , NY Standard 4,713 $75,997 $223,400
12158 Selkirk , NY Standard 5,878 $97,419 $315,100
12159 Slingerlands , NY Standard 8,163 $128,306 $449,900
12160 Sloansville , NY Standard 716 $69,750 $167,600
12161 South Bethlehem , NY Standard 99 $123,750 —
12164 Speculator , NY Standard 539 $62,083 $226,800
12165 Spencertown , NY Standard 220 $65,368 $417,500
12166 Sprakers , NY Standard 1,635 $94,821 $219,400
12167 Stamford , NY Standard 2,279 $53,047 $193,100
12168 Stephentown , NY Standard 1,752 $88,830 $204,100
12169 Stephentown , NY Standard 417 $43,936 $210,000
12170 Stillwater , NY Standard 5,351 $102,857 $271,600
12172 Stottville , NY Standard 176 $86,587 —
12173 Stuyvesant , NY Standard 2,099 $76,607 $225,600
12174 Stuyvesant Falls , NY Standard 427 $51,131 —
12175 Summit , NY Standard 612 $90,250 $152,100
12176 Surprise , NY Standard 393 $63,565 $204,200
12177 Tribes Hill , NY Standard 387 $92,444 —
12180 Troy , NY Standard 53,479 $75,851 $244,400
12181 Troy , NY No street area — — —
12182 Troy , NY Standard 14,867 $56,984 $212,600
12183 Troy , NY Standard 2,970 $59,406 $138,300
12184 Valatie , NY Standard 7,787 $98,622 $355,200
12185 Valley Falls , NY Standard 1,709 $110,625 $210,900
12186 Voorheesville , NY Standard 6,512 $112,446 $360,000
12187 Warnerville , NY Standard 752 $78,149 $187,500
12188 Waterford , NY Standard 10,988 $92,279 $281,400
12189 Watervliet , NY Standard 18,656 $65,276 $220,600
12190 Wells , NY Standard 671 $74,286 $268,600
12192 West Coxsackie , NY Standard 1,077 $106,213 $283,000
12193 Westerlo , NY Standard 1,746 $108,438 $308,100
12194 West Fulton , NY Standard 162 $91,250 $239,100
12195 West Lebanon , NY Standard 162 $148,815 $229,600
12196 West Sand Lake , NY Standard 3,880 $110,889 $317,300
12197 Worcester , NY Standard 2,298 $77,778 $165,200
12198 Wynantskill , NY Standard 6,796 $113,083 $285,100

Cite this page

zipcodes.pro. “ZIP codes starting with 121.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/121

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