Open dataset
US DMA → Regional Sports Network Map
A free, citable dataset mapping every US ZIP code to its Nielsen Designated Market Area (DMA) and the regional sports networks that broadcast local team games in that market.
Last updated: · Maintained by Spot Sports.
Coverage at a glance
- ZIP codes
- 41,015
- Nielsen DMAs
- 210
- DMAs with RSNs
- 209
- RSN slots
- 1281
What it contains
- ZIP → DMA: every US ZIP code mapped to its Nielsen DMA, sourced from public DMA boundary data.
- DMA → RSN slugs: each DMA annotated with the regional sports networks that air local MLB, NBA, NHL, and MLS team games in that market.
- Blackout synthesis: built from the public MLB, NBA, and NHL blackout APIs (joined per ZIP) plus ESPN broadcast metadata and team RSN frequency analysis.
Sample rows
| DMA code | DMA name | Sample RSN slugs |
|---|---|---|
| 501 | NEW YORK | msg-network, msgsn, sny, wlny-new-york, yankees-entertainment-and-sports-network, yes |
| 803 | LOS ANGELES | fanduel-sports-network-socal, fanduel-sports-network-west, fanduelsnwest, kcal-los-angeles, kcop, spectrum-sports-net-plus, spectrum-sports-network, sportsnetla, victoryplus-sports-network |
| 504 | PHILADELPHIA | nbc, nbc-sports-philadelphia |
| 506 | BOSTON (MANCHESTER) | masn, nbc, nbc-sports-boston, nesn, nesnplus, new-england-sports-network, raystv, sportsnet, tva, yes |
| 524 | ATLANTA | bravesvision, fanduel-sports-network-southeast |
| 602 | CHICAGO | chicago-sports-network, chsn, marqueesportsnet |
| 623 | DALLAS - FT. WORTH | kfaa-tv, mavscom, rangerssportsnetwork, spacecityhomenetwork, victoryplus-sports-network |
| 753 | PHOENIX (PRESCOTT) | altitude-sports, arizonas-family-3tv, dbackstv, scripps-sports, suns-live, utah-16 |
How it's built
The mapping is regenerated by the script scripts/generate-dma-rsn-map.ts in the Spot Sports monorepo. It queries the public MLB, NBA, and NHL blackout APIs for every Nielsen DMA centroid, joins the returned blackout team lists with ESPN broadcaster metadata, and applies a frequency filter (≥40% of home games and ≥3 absolute appearances) so RSNs that only carried visiting-team broadcasts don't pollute home-team mappings.
For methodology details see the Spot Sports methodology page. For the live calculator that uses this dataset, see /watch-cost.
License & citation
The dataset is freely accessible. To cite, use:
Spot Sports. (2026). US DMA → Regional Sports Network Map. Retrieved from https://www.spotsports.com/data/dma-rsn-map
Full terms at /terms. Authoritative public sources we synthesize from: MLB blackout policy, NBA blackouts, NHL blackouts.
Related Spot Sports pages
- Watch-cost calculator — the live tool built on this dataset.
- Methodology — how all Spot data is sourced and updated.
- /llms-full.txt — full markdown payload of Spot Sports content for AI ingestion.