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DSDownloadSpeed
FCC Data · Updated April 2026
A

ZIP 59258 Internet

Sheridan County, Montana · 1000 Mbps max · 10 providers · Competitive

Broadband Grade

Score Breakdown — 82/100

63
Download (40%)
100
Competition (30%)
85
Fiber (20%)
100
Upload (10%)
Speed

Maximum Available Speeds

Download1000 Mbps

FCC benchmark: 100 Mbps

Upload1000 Mbps

FCC benchmark: 20 Mbps

Providers

10 Internet Providers in 59258

ProviderTechnologyDownloadUpload
Charter Communications INCCable (DOCSIS 3.1+)1000 Mbps35 Mbps
Wispwest.netFixed Wireless200 Mbps200 Mbps
T-MobileFixed Wireless25 Mbps3 Mbps
CenturyLinkADSL240 Mbps3 Mbps
Montana InternetFixed Wireless60 Mbps10 Mbps
Triangle CommunicationsFiber (FTTH)300 Mbps300 Mbps
CenturyLinkVDSL140 Mbps100 Mbps
Mid-Rivers CommunicationsSDSL0.768 Mbps0.768 Mbps
Mid-Rivers CommunicationsADSL8 Mbps1 Mbps
Nemont Telephone Cooperative, INC.Fixed Wireless30 Mbps30 Mbps
Fiber

Fiber Availability

Fiber is available in 59258

Fiber providers: Triangle Communications (300/300 Mbps)

Nearby

Nearby ZIP Codes

Compare 59258 vs 59257

Test Your Speed

See how your connection compares to the 1000 Mbps available in 59258.

FAQ

Frequently Asked Questions

What internet providers are available in ZIP code 59258?

ZIP code 59258 has 10 internet providers. Charter Communications INC, Wispwest.net, T-Mobile and 7 more serve this area. The fastest available download speed is 1000 Mbps.

What is the Broadband Grade for 59258?

ZIP code 59258 has a Broadband Grade of A (score: 82/100). This grade factors in download speed (63/100), provider competition (100/100), fiber access (85/100), and upload speed (100/100).

Is fiber internet available in 59258?

Yes, fiber-to-the-home (FTTH) internet is available in ZIP code 59258. Fiber providers in this area include Triangle Communications.