ZIPList5 Market Area TM (June 2025 data)

This market area scheme divides the 50 states and Puerto Rico into 280 unique geographic market areas. Each ZIP code in the 50 states is assigned to the appropriate market area. A particular market area may consist of ZIP codes in one, two, or more contiguous states.

This market area geographic system has gained general acceptance within the business community as a basic approach to structuring advertising and promotion as well as setting up distribution systems, sales territories, and franchise territories, etc. The market area scheme is superior to a scheme based on MSA/PMSA because a market area generally covers an area considerably larger than the corresponding MSA/PMSA, there are fewer market areas than MSA/PMSAs, and market areas cover the entire country, while MSA/PMSAs omit the rural areas of most states.

This market area definition scheme is superior to market area definitions based on broadcast television viewing patterns. TV coverage areas are significantly distorted, especially in the western states, by cable and satellite usage, leading to non-contiguous geographic areas being combined into a single market area. Our market area scheme avoids this problem because the market area definitions are based strictly on geography instead of television viewing patterns.

This ZIP code database file is formatted as a comma-delimited ASCII text file, making it easy to import the data into most database programs.

We update every record in ZIPList5 Market Area monthly, so you always receive the latest and most up-to-date data. You can't get more accurate and timely ZIP code data from any other source! We include the most recent area code changes in every update. We license our ZIP code data directly from the US Postal Service, and collect all the other data continuously from a variety of other sources.

Record Layout
The data records of the ZIPList5 Market Area file consist of ten fields, arranged as follows:

Field		Type		Length
City Name		Variable length		28 maximum
State Code		Fixed length		2
ZIP code		Fixed length		5 numeric characters
Area code		Fixed length		3 numeric characters
County FIPS		Fixed length		5 numeric characters
County Name		Variable length		25 maximum
Time zone		Variable length		5 maximum
DST		Fixed length		1 ("Y" or "N")
Market Area		Fixed length		3 numeric characters or blank
ZIP code type		Fixed length		1 character (P, U, M, or blank)

The city name field contains the one "preferred" city name for this particular ZIP code as defined by the US Postal Service. This database contains only one record for each active ZIP code, and does NOT list any possible "alias" city names for any ZIP code.

The ZIP code field lists only valid 5-digit ZIP codes currently defined by the USPS. Obsolete ZIP codes which have been "retired" from service by the USPS are not included in this database.

The area code is the "most prevalent" area code for that one ZIP code. If multiple area codes apply to that one ZIP code, only the primary area code is listed. Overlay area codes are not listed.

The County FIPS code is a 5-digit numeric field containing a unique numeric identification assigned to that county by the US government. The County FIPS code field and the County Name field identify the "most prevalent" county for the 5-digit ZIP code listed in a given record.

The time zone field always contains the standard time zone designation for a particular ZIP code. If that ZIP code falls within a political entity which participates in Daylight Saving Time (DST) during the summer months, the DST field is set to "Y". Otherwise the DST field is set to "N".

The market area field contains the 3-digit Market Area code, if any, in which some or all of the ZIP code lies. A cross-reference file defining all market area codes, the market area population, and their geographic name (usually one or more city names) is included with the database.

The ZIP Code type field identifies special ZIP codes used for PO Boxes, companies, or the military.

Market area, county, ZIP code, and area code boundaries
Market area boundaries, county boundaries, state boundaries, ZIP code boundaries, area code boundaries, and time zone boundaries are all administered by different federal, state, local, and private agencies. As you probably already know, cooperation between these various agencies is virtually nonexistent. As a result, the various boundaries do not necessarily align. This means that a given ZIP code area may actually cross more than one market area, county, area code, and/or time zone boundary. But each ZIP code record in ZIPList5 Market Area has only a single field each for market area, county name, area code, or time zone. An attempt to add additional records to document all the variations which can occur would make the product too complex and difficult to use, and is beyond the scope of this inexpensive database.

We have attempted to provide the most accurate information for each ZIP code by selecting the most prevalent county, area code, and time zone, and market area code for each ZIP code in the database. However, you should be aware that because of this boundary alignment problem, the market area code, county name and FIPS code, area code, and time zone provided for each ZIP code in the database may not apply to every address which lies within the boundaries of that ZIP code.

Sample Records

City Name
Aurora
Denver
Austin
Sandy

ST Code
CO
CO
TX
UT

ZIP Code
80010
80203
78701
84070

Area Code
303
303
512
801

Cnty FIPS
08005
08031
48453
49035

County Name
Arapahoe
Denver
Travis
Salt Lake

Time Zone
MST
MST
CST
MST

Daylight Saving
Y
Y
Y
Y

Market Area
034
034
064
716

ZIP Type

Click here to download sample records in comma-delimited ASCII (CSV) format.

Click here to download sample records in comma-delimited ASCII (CSV) format, compressed with WinZip.

Available File Formats (selected at time of download)

Comma-delimited ASCII (CSV) compressed and uncompressed

Microsoft Excel 2007, 2010, 2013

Microsoft Access 2007, 2010, 2013

dBase IV, Visual FoxPro

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