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/016

ZIP codes starting with 016

ZIP codes
17
States
MA
Largest city
Worcester, MA
Population
214,625

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 016xx

ZIP codes starting with 016
ZIP City Type Population Median income Median home
01601 Worcester , MA No street area — — —
01602 Worcester , MA Standard 27,092 $91,764 $417,300
01603 Worcester , MA Standard 20,868 $66,049 $331,300
01604 Worcester , MA Standard 39,812 $73,505 $352,500
01605 Worcester , MA Standard 30,579 $54,642 $392,100
01606 Worcester , MA Standard 22,844 $92,105 $370,800
01607 Worcester , MA Standard 8,706 $78,727 $377,200
01608 Worcester , MA Standard 4,932 $45,687 $153,600
01609 Worcester , MA Standard 22,047 $68,381 $444,000
01610 Worcester , MA Standard 30,444 $51,472 $308,700
01611 Cherry Valley , MA Standard 2,299 $109,868 $359,800
01612 Paxton , MA Standard 5,002 $134,083 $472,300
01613 Worcester , MA No street area — — —
01614 Worcester , MA No street area — — —
01615 Worcester , MA No street area — — —
01653 Worcester , MA No street area — — —
01655 Worcester , MA No street area — — —

Cite this page

zipcodes.pro. “ZIP codes starting with 016.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/016

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