Antenna structures in Sully County, South Dakota
At a glance
Sully County, South Dakota has 5 FCC-registered antenna structures, 4 of them marked constructed. That is the 64th-largest count among the 66 South Dakota counties with registrations, and 0.39% of the state's 1,289. The tallest constructed structure in the county is registration 1049724 near Agar at 104 m (340 ft).
Dataset updated . Refreshed from the FCC ASR weekly bulk database.
How does Sully County compare with the rest of South Dakota?
With 5 registrations, Sully County ranks 64th of 66 counties in South Dakota; Minnehaha County leads the state with 116. The average registered overall height here is 70 m, about 17% below the South Dakota average of 84 m. The tallest standing structure, at 104 m, is about 48% above the county average.
What kinds of structures are registered in Sully County?
The most common filed structure type in Sully County is tower (code TOWER), with 3 registrations (60%). It is followed by guyed tower (1) and building antenna (1).
By registration status: 4 constructed and 1 granted (not yet constructed). Only constructed registrations describe structures the registry treats as standing; canceled, dismantled and terminated records stay listed as history.
Who owns the towers in Sully County?
BIT/State Radio Communications Engineering, CCATT LLC, CommNet Cellular Inc., Communications Center Inc and SITKA SEVENTH DAY ADVENTIST CHURCH hold the most registrations in Sully County, 1 each of the 5. 5 owners with two or more registrations nationwide hold structures in the county.
Which places in Sully County have registered structures?
Registrations in Sully County list 2 different city or place names. The most frequent are Onida (4) and Agar (1).
Every registration
All 5 structures in Sully County, tallest first
| # | Structure | Height | Type | Status |
|---|---|---|---|---|
| 1 | Agar · 1049724 | 104 m | Guyed tower | Constructed |
| 2 | Onida · 1261540 | 94 m | Tower (type not specified) | Constructed |
| 3 | Onida · 1217985 | 61 m | Building with antenna | Constructed |
| 4 | Onida · 1279532 | 46 m | Tower (type not specified) | Granted (not yet constructed) |
| 5 | Onida · 1255233 | 45 m | Tower (type not specified) | Constructed |
Frequently asked questions
How many cell towers are in Sully County, SD?
The FCC Antenna Structure Registration database lists 5 registered antenna structures in Sully County, South Dakota, 4 of them constructed. Registration is generally required only for structures taller than about 60 m or near airports, so shorter cell sites may not appear.
What is the tallest tower in Sully County?
The tallest constructed registered structure in Sully County is registration 1049724, a guyed tower near Agar at 104 m (340 ft) overall height.
Who owns the most towers in Sully County?
BIT/State Radio Communications Engineering, CCATT LLC, CommNet Cellular Inc., Communications Center Inc and SITKA SEVENTH DAY ADVENTIST CHURCH are tied for the most registrations in Sully County, with 1 each.
What kind of towers are in Sully County?
Tower (type not specified) is the most common filed type (3 of 5 registrations), then guyed tower (1).
More in South Dakota
About this data
Source: FCC Antenna Structure Registration (ASR) database, as published October 13, 2026 — TowerCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: TowerCensus, “Antenna structures in Sully County, South Dakota”, https://towercensus.com/towers/south-dakota/county/sully-county (data as of October 13, 2026).