City tree data in Washington DC: Urban Forestry street trees
What Washington DC's open data portal publishes about street trees: the 222,830 rows the layer counts on October 8, 2026, the planting status values that include retired and proposed sites, the 2,053,654 row yearly archive and the Creative Commons licence the item names.
Checked against the sources at the bottom of this page on October 8, 2026. Rules, fees and pay change: the source has the last word.
This page describes a public dataset as its portal publishes it. It reports the portal's own description, field list, row counts and licence text as read on October 8, 2026. It does not interpret the numbers. The family overview is on the guide to city open tree data. For a second city that shows its licence in the dataset record, see the San Francisco street tree inventory.
What the dataset is
The item is titled Urban Forestry Street Trees on Open Data DC, published by the City of Washington, DC. Its description says the District Department of Transportation's Urban Forestry Division is the primary steward of the city's public trees, puts that number at about 175,000 and points to the trees.dc.gov site. The data sits in a layer named UFA Street Trees in one of the city's tree map services. The item's tags include street tree, tree and DDOT.
Rows, status and update
The layer returned a count of 222,830 rows on October 8, 2026. The planting status field (TBOX_STAT), which also marks retired trees and planting sites, held Plant on 196,602 rows, Retired on 12,197, Proposed on 4,837, Conflict on 4,317, Open on 4,311, Delete on 269, Utility Conflict on 149 and Under Construct on 145, with 3 rows empty. A separate retired date field held a value on 5,452 rows. The latest value in the last edited date field was October 2, 2026. The layer record gives no update frequency.
The layer has 48 fields. They include scientific and common name, genus and family, planting date, facility ID, vicinity, ward, tree box length and width, wires, curb and sidewalk codes, trunk diameter (DBH), disease, pests, condition, condition date, ownership, tree notes, crown measurements from imagery, photo fields and a warranty period. By the condition field, 144,510 rows read Good, 29,011 Fair, 20,916 Excellent, 6,171 Poor and 5,717 Dead, and 16,505 were empty. By ownership, 193,423 rows read UFA, 11,847 DPR, 6,477 Private, 5,726 DCPS, 2,213 DGS, 1,961 NPS and 128 DCHA. By common name, red maple had the most rows with 11,796, then willow oak with 10,732 and pin oak with 7,761. These are row counts in the portal, not a statement about how many trees stand in the city.
Archive
A second item, Street Tree Archive, is described as showing annual changes in species composition and tree health from 2014 to present, and puts the public tree count at about 180,000. Its layer returned 2,053,654 rows on October 8, 2026, with fields for common and scientific name, genus, planting status, DBH, condition, year, ward, advisory neighborhood commission and single member district.
Licence
The item's licence text reads that the work is licensed under a Creative Commons Attribution 4.0 International License and links the licence page. Creative Commons states that this licence allows sharing and adapting the material for any purpose, including commercially, with credit to the creator.
Sources
- Open Data DC, Urban Forestry Street Trees (item record with description and licence), read October 8, 2026
- DC GIS, UFA Street Trees layer (fields), read October 8, 2026
- DC GIS, UFA Street Trees layer (row count), read October 8, 2026
- DC GIS, Street Tree Archive layer (fields and row count), read October 8, 2026
- Creative Commons, Attribution 4.0 International deed, read October 8, 2026