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City ZIP codes · New York

Ithaca, NY ZIP Codes

4 ZIP codes use the postal name Ithaca, New York (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 2 for PO boxes or a single organization. Ithaca's most populous ZIP code is 14850, with 68,610 people (ACS 2020-2024); 4% of its land is in the city of Ithaca.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Ithaca's ZIP codes?

14850: $71k median household income14853: – median household income1485014850: $71k median household income14853: – median household income1485014850: $71k median household income14853: – median household income14850
The 2 residential ZIP codes named Ithaca, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

All 2 residential ZIP codes of Ithaca

Residential ZIP codes with the postal name Ithaca, NY, largest first (ACS 2020-2024); sort by any column
County
14850 Tompkins County 68,610 550 $71k $354k
14853 Tompkins County 2,405 6,247 – –

Download the 4 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Ithaca

2 ZIP codes named Ithaca have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Ithaca, NY: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
14851Tompkins County
14852Tompkins County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Ithaca's ZIP codes reach?

Ithaca's residential ZIP codes lie in Tompkins County.

Which places do Ithaca's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Ithaca's residential ZIP codes cover Ithaca itself and 9 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • Cayuga Heights 14850
  • Danby census-designated 14850
  • East Ithaca census-designated 14850
  • Forest Home census-designated 14850
  • Lansing 14850
  • Northeast Ithaca census-designated 14850
  • Northwest Ithaca census-designated 14850
  • South Hill census-designated 14850
  • Varna census-designated 14850

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Ithaca's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Ithaca starts with 148.

Three-digit prefixes of Ithaca's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Ithaca's
PrefixSectional centerHereAll codes
148 Rochester, NY (SCF 144) 4 81

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.