Newcastle
McClain County10,989 in 2020·15,198 in 2025·+4,209 people
Oklahoma rankings · Growth
Fastest-growing towns in Oklahoma
Newcastle has grown fastest of Oklahoma’s 127 towns of 2,500+: up 38.3% from 10,989 residents in April 2020 to an estimated 15,198 in July 2025 (Census Bureau estimates). The typical town here changed +2.7%; 38 of the 127 lost residents.
Census Bureau population estimates, Vintage 2025: July 1, 2025 against the April 2020 base, both on January 2025 town lines (people a town annexed are in its base, not its growth). Estimates, not counts. Unincorporated communities (census-designated places) get no estimate, so they aren’t listed. A described list: no letters. How grades work
+38.3%
Goldsby
McClain County2,694 in 2020·3,591 in 2025·+897 people
#3Piedmont
Canadian County7,397 in 2020·9,427 in 2025·+2,030 people
All 127 towns
Growth since 2020, highest first.
127 towns ranked. Not here? See why a town may be missing.
#TownGrowth since 2020People addedResidents
Quick answers
Questions people ask
What is the fastest-growing town in Oklahoma?
Newcastle (McClain County): it grew 38.3%, from 10,989 residents in April 2020 to an estimated 15,198 in July 2025. Goldsby (+33.3%) and Piedmont (+27.4%) follow.
How are these towns ranked?
By the percent change in residents from the Census Bureau’s April 2020 estimates base to its latest July 1 estimate, highest first, on the exact change: two towns shown with the same tenth of a percent keep the order of their unrounded figures, and only an identical change shares a rank (T). The base is the 2020 Census count redrawn on today’s town lines, so a town that annexed land since 2020 changes only by births, deaths and moves, not by the people it took in. How grades work.
Why isn’t my town on this list?
The list covers the towns TownRatings grades that had 2,500+ residents in the 2020 estimates base (127 in Oklahoma). Census-designated places (unincorporated communities) have no Census Bureau estimates, so they never appear; a town incorporated since 2020, or one TownRatings merges with its twin township, isn’t listed either. Every town is on the Oklahoma page.
Go deeper
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Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.
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