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ZIP Code to County & Metro Equivalence Table
Use the ZIP code equivalence table in this section to determine the county and metropolitan area in which 5-digit ZIP codes of interest are located.
August 2016. The ZIP Code to County to Metro data have been updated and extended. See the new column/field structure below in this section. These new and extended data are now available on a subscription basis as a downloadable spreadsheet file or interactive table similar to the table shown below. See more about these options in this section.
Use ZIP Code/Census Tract demographic-economic profiles with integrated map showing patterns of neighborhood economic prosperity. See see example for ZIP code 85258.
The ZIP code equivalence table meets many needs. Your needs may be similar but different. One alternative is the ProximityOne address-to-county/metro coding service. We can process your address file, assigning codes, county name and metro name to each address record, and return your original address records/file with those attributes appended. Read more below in this section.
ZIP Code Geographic-Demographic-Economic Updates scroll section
Using the Interactive ZIP Code Equivalence/Look-up Table
The interactive equivalence/look-up table below shows all U.S. 5-digit ZIP codes sorted first by state-county (FIPS) code and then by ZIP code (within county). View ZIP codes in one state using the State selection button. To locate a ZIP code of interest, either use the Find ZIP query or sort on the ZIP code column and then scroll down the table until the ZIP of interest is located.
Each row/line shows the ZIP code, state-county code, county name, core-based statistical area (CBSA) code and name, CBSA type (MSA or MISA) and metropolitan division (MD) code and name. Only some MSAs, meeting certain conditions, have component MDs. For ZIPs with no CBSA, the ZIP code is not located in a metropolitan area.
The Find ZIP start value uses ZIP 43060 to illustrate a ZIP code located in multiple counties and multiple metros. See details The Multi column shows the sequence number of the county in which the ZIP is located (00 if one county).
Illustrating Intersection of ZIP Code Area 85258 with Census Tracts
Demographic-Economic Profiles for ZIP Code 85258 and Tract 04013216813
ZIP Code Area 85258 -- Scottsdale, AZ area
Census Tract 04013216813 -- Scottsdale, AZ area
Get profiles for any area: census tract, ZIP code area, city, place, school district.
ZIP Code Area to County to Metro Data Subscription Options
There are two options to order the ZIP Code - County - Metro Data. These data are generally updated annually.
Option 1 -- Data File. Order the spreadsheet file for download and use on your computer with your software.
The file is provided for a one-time fee for perpetual use. Optionally re-purchase the file at any time in the future for an update; same fee.
Option 2 -- Online. Subscribe to the interactive table similar to the table and operation shown below.
You receive login instructions and have 24x7 access. This service is an annual subscription continuing through the start-up month for 12 additional months.
ZIP Code - County - Metro Equivalence Interactive Table
The following interactive table is illustrative and includes only California ZIP codes.
See licensing options described above to access full national scope ZIP Code area coverage.
Click column header to sort; click again to sort other direction. See related Ranking Tables Main Page
Multi-County, Multi-Metro ZIP Code Areas
Multi-area county and metro ZIP codes ... 30,422 ZIP codes existed as ZIP codes totally within one county (includes ZIP code areas, post office delivery locations, other fixed address delivery locations). In addition, 10,839 ZIP codes were located in two or more counties, making for a total of 41,241 unique 5-digit ZIP codes. There are many instances where ZIP code areas cross county boundaries. The equivalence table includes 55,685 ZIP codes, reflecting the occurrence of the ZIP code for each county/metro in which it was located. The following map shows ZIP code 43060 (yellow fill color) that is partly contained in three counties (names as blue labels). This view also shows that a ZIP code can be in multiple metros; each of these three counties are in different metros (names as yellow labels). The second graphic shows these ZIP codes in a tabular view.
Extended Data and Other Lookups/Equivalencing
The same data shown in this table are also available for 7- and 9-digit ZIP codes. These data are not included in the ranking table for reasons of size and typical usage. The 2.8 million record dataset can be processed with a special look-up and code assignment program. Register using this form for information on more detailed data and related software (note special interest ZIP code equivalencing in text section).
ZIP Code Equivalence Files
The following 2010 ZIP Code (ZCTA) equivalence/relationship files are available. Contact us for details (888-364-7656).
ZIP to County
ZIP to County Subdivision
ZIP to Place
ZIP to Census Tract
ZIP to Congressional District
ZIP to Metropolitan and Micropolitan Statistical Areas
Address-to-County/Metro Coding Service
Use the ProximityOne address-to-county/metro coding service to have county, metro and more assigned to your address records. We process your address file, assigning codes, county name and metro name to each address record, and return your original address records/file with those attributes appended. Coding the address to census block, rather than using ZIP code to county only, provides a much more accurate method of assigning/associating your addresses to a county/metro or other area. No learning curve, fast turnaround. Contact us for more information (888-364-7656).
Sample input file (scroll section)
Provide your address file in CSV or XLS structured like shown below.
Coded Output File (scroll section)
The output file was generated by processing the above input file is shown as a graphic below. Note that it includes the original columns plus census block code, median household income for the block group where address is located, county code and name, metro (CBSA) code, type and name. The median household income is based on the latest estimate available from the American Community Survey. Alternative or additional demographic items may be added.
Shapefile & Map
A shapefile is created as the addresses are coded. The graphic below shows the address locations as red markers. See your address coded data shown in a map view. Optionally use this shapefile in GIS applications. The larger view (click graphic) shows metro boundaries.
Click graphic for larger view and details.
Demographic-Economic Profile Geocodes
To order a demographic-economic profile (see above) for cities, counties or school districts, get codes to use in order form from lists provided here:
City -- 7 character state-city code - example: the code for Houston, TX is 0100124
County -- 5 character state-county code - example: the code for Harris County, TX is 48201
School District - 7 character state-school district code - example: the code for Harris ISD, TX is 4823640
ZIP Code-County-Metro/CBSA Equivalence file
The following items as included in the new interactive table and data file.
ProximityOne User Group
Join the ProximityOne User Group to keep up-to-date with new developments relating to metros and component geography decision-making information resources. Receive updates and access to tools and resources available only to members. Use this form to join the User Group.
Support Using these Resources
Learn more about small area demographic-economic characteristics, ZIP code geographic drill-down and related analytical tools. Join us in a Decision-Making Information Web session. There is no fee for these one-hour Web sessions. Each informal session is focused on a specific topic. The open structure also provides for Q&A and discussion of application issues of interest to participants.
ProximityOne develops geographic-demographic-economic data and analytical tools and helps organizations knit together and use diverse data in a decision-making and analytical framework. We develop custom demographic/economic estimates and projections, develop geographic and geocoded address files, and assist with impact and geospatial analyses. Wide-ranging organizations use our tools (software, data, methodologies) to analyze their own data integrated with other data. Follow ProximityOne on Twitter at www.twitter.com/proximityone. Contact ProximityOne (888-364-7656) with questions about data covered in this section or to discuss custom estimates, projections or analyses for your areas of interest.