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National Address Database

The U.S. Department of Transportation (USDOT) and its partners from all levels of government recognize the need for a National Address Database (NAD).  Accurate and up-to-date addresses are critical to transportation safety and are a vital part of Next Generation 9-1-1. They are also essential for a broad range of government services, including mail delivery, permitting, and school siting.

To meet this need, USDOT partners with address programs from state, local, and tribal governments to compile their authoritative data into the NAD.  To date, the NAD contains data from 24 state government partners (with an additional 11 states in the queue), 17 local government partners, and 1 tribal government partner.

Release 4 of the NAD, containing 53.6 million records, is now available for download from the link at the top left of this page. 

If you represent a state or local government and would like to include your address points in the NAD, please contact us at nad@dot.gov.

"The map includes a color-coded key that identifies the National Address Database (NAD) partner participation level by state."
USDOT National Address Database (NAD) Map, Participation by State (as of September 2020)

View detailed information on participation by state below the maps.

"The map includes a color-coded key that identifies the National Address Database (NAD) processing status level by county."
USDOT National Address Database (NAD) Map, Processing Status by County (as of September 2020)

View detailed information on processing status by county below the maps.

 

USDOT National Address Database (NAD) Map, Participation by State (as of September 2020)

The color-coded key is described as follows:

Twenty five (23) Dark Green states have provided address data including: Alaska, Arizona, Arkansas, Colorado, the District of Columbia, Delaware, Indiana, Iowa, Maine, Maryland, Massachusetts, Montana, North Carolina, New Jersey, New Mexico, New York, Ohio, Tennessee, Texas, Utah, Virginia, Vermont, and Wisconsin.

Nine (9) Yellow states have not yet submitted data to be processed including:  Connecticut, Florida, Illinois, Mississippi, Nebraska, Oregon, Pennsylvania, Rhode Island, and Washington.

Eight (8) Light purple states do not have data to provide including:  Alabama, California, Georgia, Louisiana, Nevada, Oklahoma , Missouri, and Wyoming.

Eight (8) Dark purple states may have data that is not in the public domain including: Kansas, Kentucky, Michigan, Minnesota, New Hampshire, North Dakota, and South Carolina, and South Dakota.

Two (2) Grey states have not yet been contacted including:  Idaho and Hawaii.

Hashed lines over five (5) states represent Tribal or local-level participation rather than state-wide participation including:  Louisiana, Missouri, Minnesota, South Dakota, and Wyoming.

Note that not all states have 100% coverage.

USDOT National Address Database (NAD) Map, Processing Status by County (as of September 2020)

The map includes a color-coded key that identifies the NAD status level by county.

The color-coded key is described as follows:

Dark Green color indicates submitted address data has been processed and “Accepted” for the following (16) whole states:  Arizona, the District of Columbia, Delaware, Indiana, Maine, Massachusetts, Montana, North Carolina, New Jersey, New Mexico, New York, Ohio, Tennessee, Utah, Virginia, and Vermont; and (12) states with partial participation: Alaska, Arkansas, Colorado, Iowa, Louisiana, Maryland, Minnesota, Missouri, South Dakota, Texas, Wisconsin, and Wyoming.

Light Green color indicates submitted address data is “In Progress” status for the following (2)states: West Virginia, and parts of Texas.

Light Yellow color indicates data has not been provided for processing yet and remains “In Queue” status for the following (10) states: Alaska, Connecticut, Florida, Illinois, Mississippi, Nebraska, Oregon, Pennsylvania, Rhode Island, and Washington.

Light Purple color indicates data does not exist or is not part of the statewide program for the following (5) whole states: Alabama, California, Georgia, Nevada, and Oklahoma; and (7) partial states including parts of Arkansas, Colorado, Iowa, Louisiana, Missouri, Wisconsin, and Wyoming.

Dark Purple color indicates the data may not be in the public domain for the following (6) whole states: Kansas, Kentucky, Michigan, New Hampshire, North Dakota, and South Carolina; and the following (3) partial states including parts of Colorado, Maryland, and South Dakota.

Grey color indicates "Not Yet Contacted" status for the following states: Idaho and Hawaii.

Note that not all states have 100% coverage.

Last updated: Thursday, October 29, 2020