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  3. Area code 281
Texas (TX)Central Time (CT)

Area Code 281

Texas (TX) * Houston, Spring, Pasadena, Katy, Baytown, Humble, Richmond, Sugar Land * Central Time (CT)

6.7M

Population

177

ZIP codes

Texas

Primary state

Central Time (CT)

Time zones

What stands out

  • Coverage: 6.7M people across 177 ZIP codes.
  • Overlapping area codes: 346, 713, 832
  • Major cities: Houston, Spring, Pasadena.
Primary state:Texas (TX)/Major cities:Houston, Spring, Pasadena, Katy, Baytown, Humble, Richmond, Sugar Land

Browse sections

Basics

Percentiles compare this area code to other area codes nationwide.

Population

6.7M

ZIP codes

177

Median age

35.4 yrs

Population density

1.7K/sq mi

Mean commute time

30 min

Avg. household size

2.8

Neighbors

Neighboring area codes

346409713832936979
Notes & Sources
  • Area-code boundaries can change over time; verify official assignments with NANPA for critical use.
  • In regions with overlapping area codes, new numbers may use a different code.
  • This page aggregates ZIP-based crosswalks for orientation and does not indicate phone-number availability.

Data freshness

ACS 5-year
2020–2024
Page updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

U.S. Census (ACS 5-year)U.S. Census TIGER/LineNANPA

Derived statistics

  • Area codes are not Census geographies; statistics are estimated by aggregating ZCTA (ZIP) values for associated ZIPs.
  • ZIP↔area code associations are derived from NPA boundary polygons and ZCTA centroid points, and can be approximate.
  • Median age, mean commute, and household size are population-weighted; population density uses summed ZIP land area.
Area code overlays and service areas are primarily governed by NANPA; this page uses aggregated geographic overlays for orientation only.

Data accuracy & methodology

This report aggregates 2020–2024 ACS 5-year estimates and geographic overlays for orientation. Area code service areas can cross ZIP/state boundaries and change over time; verify official assignments with NANPA for critical use.