409 Area Code: Beaumont, Texas

Southeast Texas along the Gulf Coast is served by the 409 area code, with Beaumont as the primary city. Beaumont sits on the Neches River in the lower coastal plain of southeast Texas, on a stretch of country that has long anchored a substantial petrochemical industry — the discovery of the Spindletop oil field nearby in 1901 was a turning point in the early Texas oil industry, and the surrounding refineries and chemical plants have shaped the local economy ever since. The 409 footprint extends through Port Arthur, Galveston, the Texas Gulf coast, and the surrounding cluster of southeast Texas counties.

In records the directory has compiled for 409 numbers, other Texas cities — Abilene, Austin, College Station, and Conroe — recur frequently. None of those are inside the 409 footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across Texas and addresses linked across multiple cities. The directory currently documents 297 distinct prefixes within 409 in detail, a working subset of the prefix population the code carries.

Beaumont's home values come in below the US median, with median household income running below the national figure. The city's median age sits in the mid-thirties (close to the US reading), and population places Beaumont among the mid-sized Texas cities — substantial enough to anchor a regional economy organized around the petrochemical complex, the working coastline, and the surrounding rural counties of southeast Texas.