Skip to main content
USAvizUSAviz

Local data snapshots and weekly insights for every place in America.

Explore

  • Insights
  • Search
  • Browse states
  • Browse metros

Company

  • About
  • Methodology
  • Sources
  • Embed Our Data
  • Contact
Privacy·Terms·Do Not Sell or Share

© 2026 USAviz.com. All rights reserved.

USAvizUSAviz
Insights
About
Home
447
  1. Home
  2. Area Codes
  3. Area code 447
Illinois (IL)Central Time (CT)

Area Code 447

Illinois (IL) * Springfield, Decatur, Champaign, Danville, Quincy, Urbana, Alexander, Allerton * Central Time (CT)

1.1M

Population

326

ZIP codes

Illinois

Primary state

Central Time (CT)

Time zones

What stands out

  • Coverage: 1.1M people across 326 ZIP codes.
  • Overlapping area codes: 217
  • Major cities: Springfield, Decatur, Champaign.
Primary state:Illinois (IL)/Major cities:Springfield, Decatur, Champaign, Danville, Quincy, Urbana, Alexander, Allerton

Browse sections

Basics

Percentiles compare this area code to other area codes nationwide.

Population

1.1M

ZIP codes

326

Median age

40.2 yrs

Population density

66.9/sq mi

Mean commute time

20 min

Avg. household size

2.3

Neighbors

Neighboring area codes

217309319573618660730765779812815861
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.