Top 16 street addresses for overdose calls

What this dataset measures

Built to answer whether some of Seattle's supportive housing buildings are among the city's top addresses for 911 overdose calls. The fire department's public dispatch log is the only public source that gives overdose calls by address. The city's rental registration list gives unit counts for a size-adjusted comparison.

Geography

Seattle, Washington

Unit of observation

A street address (or intersection) and period, with the count of overdose-coded 911 dispatches there

Update cadence

One-time snapshot; may be refreshed in a later version

Curator

FactHub Research Team

Supporting files

Source snapshots, manifests, quality reports, documentation, and other materials used to produce or review this release.

• README.md Documentation · text/markdown · 2.5 KB (2,509 bytes)

  Every API query and how the tables were built

• match.js Transformation manifest · text/javascript · 1.4 KB (1,470 bytes)

  Node.js script joining rental registration unit counts to overdose call counts by address

• build_tables.js Transformation manifest · text/javascript · 6.4 KB (6,560 bytes)

  Node.js script that writes every CSV in this dataset

Saved analyses

Sources

1. Seattle Real Time Fire 911 Calls (data.seattle.gov dataset kzjm-xkqj) Overdose-coded 911 dispatches by address and date; all medical dispatch types for the coding check

   Retrieved November 10, 2026. Public Domain. Public domain; redistributed as aggregate counts

   Reliability: Government. The City of Seattle publishes every Seattle Fire Department dispatch with its call type, address and time. The call type is set at dispatch from the caller's description.

2. Seattle Rental Property Registration (data.seattle.gov dataset j2xh-c7vt) Unit counts for registered rental buildings with 50 or more units (comparison group)

   Retrieved November 10, 2026. Public Domain. Public domain; redistributed as address and unit counts

   Reliability: Government. Seattle's Department of Construction and Inspections registry of rental properties under the city's Rental Registration and Inspection Ordinance. Owners report the number of rental units.

3. Seattle Fire Department 2025 Annual Report Total suspected-overdose responses (all substances) for 2023, 2024 and 2025, used to measure how much of them the overdose call type captures

   Retrieved November 9, 2026. Public government record. Cited, not redistributed

   Reliability: Government. The fire department's own yearly report. Its 'Tracking overdoses' table gives all suspected overdoses as 6,538 (2023), 5,203 (2024) and 5,001 (2025).

4. King County Regional Homelessness Authority regional services database (resources.json) Program type, unit counts and barrier level for supportive housing programs

   Retrieved November 10, 2026. Public government data. Cited; building names and unit counts restated

   Reliability: Government. The regional homelessness authority's public map data of housing and shelter programs. It hides most supportive housing street addresses, so addresses were matched by building name to operator pages.

5. DESC housing buildings Addresses and units of DESC supportive housing buildings

   Retrieved November 10, 2026. Cited webpage. Cited; building names, addresses and unit counts restated

   Reliability: Other. DESC is Seattle's largest supportive housing operator and publishes a page for each building.

6. Plymouth Housing: Our Buildings Addresses and units of Plymouth Housing supportive housing buildings

   Retrieved November 10, 2026. Cited webpage. Cited; building names, addresses and unit counts restated

   Reliability: Other. Plymouth Housing is a Seattle nonprofit that owns and runs permanent supportive housing and lists its buildings online.

7. Seattle Office of Housing: Find Housing (rental map) Addresses and unit counts for city-funded rental buildings, used to confirm addresses

   Retrieved November 10, 2026. Public government data. Cited; addresses and unit counts restated

   Reliability: Government. The city's map of income-restricted rental buildings it funds or regulates. Most supportive housing has no public application, so many such buildings are missing from it.

License: FactHub's selection, cleaning and combined tables are licensed under CC BY 4.0. Source data keeps the terms listed above (terms).

Limitations and reproducibility

Reproducible from public data: README.md lists every API query. match.js and build_tables.js rebuild every CSV from the raw API responses. The dispatch log is live and can be revised, so a later pull may differ slightly.

• The overdose call type reflects what the 911 caller reported, not a diagnosis. It covers about a third of the fire department's suspected-overdose responses (33% in 2023, 34% in 2024, 36% in 2025); the rest are dispatched as general aid or medic calls.
• An overdose call usually means someone was treated or revived, not that someone died.
• The dispatch log has no patient identifiers, so repeat calls for the same person cannot be separated.
• A call to a building's address can involve a visitor, a clinic patient, or someone on the sidewalk outside.
• About 44% of overdose calls are logged at intersections (street scenes) rather than a street address; building rankings leave those out.
• The supportive housing list is fairly complete for DESC, Plymouth Housing, Chief Seattle Club, Catholic Community Services and King County Health Through Housing buildings, and partial for smaller operators. A fuller list would raise, not lower, the supportive housing share.
• 216 James St (17 calls) may be a side address of the Lyon Building; that was not confirmed, so it is not counted as supportive housing.
• Units for supportive housing come from operator and housing-authority listings; units for the comparison group come from the city's rental registration. A few buildings report slightly different unit counts in different sources.