📮 35 Free ZIP Code Tools · No Signup · Updated 2026

USA ZIP Code Tools

The most complete suite of free ZIP code utilities — lookup, distance, maps, timezones, USPS formatting and more.

🔍 ZIP Lookup 📏 Distance Calculator 🏙️ City to ZIP 🎯 ZIPs in Radius 📬 USPS Format ⏱️ Time Converter

🔍 ZIP Lookup

ZIP Code Lookup

Full details for any ZIP

City from ZIP code

State from ZIP code

County from ZIP code

ZIP to Timezone

Timezone from ZIP

ZIP to Area Code

Phone area code by ZIP

ZIP to Coordinates

Lat/lng for any ZIP

Standard, PO Box or Military?

🏙️ City & State

All ZIPs for a city

State ZIP Codes

All ZIPs in a state

County ZIP Codes

ZIPs in a county

ZIPs by City Name

Search ZIPs by city

Multiple Cities/ZIP

Cities sharing a ZIP

Population for ZIP

Largest ZIP Codes

Most populous ZIPs

Elevation data for ZIP

📏 Distance & Maps

ZIP Distance Calculator

Distance between 2 ZIPs

ZIPs Within Radius

All ZIPs within X miles

Nearest ZIP Code

Closest ZIPs to yours

View ZIP on Google Maps

Drive Time by ZIP

Estimate drive time

ZIP to ZIP Route

Route between two ZIPs

Multi-ZIP Distance

Distance between many ZIPs

ZIP Boundary Info

ZIP code border details

📬 USPS & Format

USPS Address Format

Format addresses correctly

9-digit ZIP code lookup

ZIP Code Validator

Validate any ZIP code

ZIP from address

ZIP Code Generator

Generate valid ZIPs

ZIP Format Guide

ZIP formatting rules

⏰ Time & Phone

ZIP Time Converter

Convert time between ZIPs

ZIP to Timezone Map

Visual timezone finder

Same Timezone ZIPs

ZIPs sharing a timezone

Area Code by ZIP

Phone area code lookup

ZIPs by Area Code

Find ZIPs for area code

41,000+

ZIP Codes in Database

50 + DC

States & Territories

35

Tools Available

2026

Data Updated

Frequently Asked Questions

What is a ZIP code?

ZIP code stands for Zone Improvement Plan. It's a 5-digit postal code used by the United States Postal Service (USPS) since 1963 to efficiently route mail to specific geographic areas.

How many ZIP codes are there in the US?

There are approximately 42,000 active ZIP codes in the United States. This includes Standard, PO Box, Unique, and Military ZIP codes across all 50 states, DC, and US territories.

What is the difference between ZIP and ZIP+4?

A standard ZIP code is 5 digits. ZIP+4 adds a hyphen and 4 extra digits to identify a specific city block or delivery point. The format is XXXXX-XXXX (e.g., 10001-0001).

Can one city have multiple ZIP codes?

Yes. Large cities like New York, Los Angeles, and Chicago have dozens of ZIP codes, each serving a specific neighborhood or district within the city.

Are ZIP codes the same as area codes?

No. ZIP codes are postal codes used for mail delivery, while area codes are 3-digit telephone prefixes. A single ZIP code area may have one or more area codes.