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Littleton Colorado Zip Code Guide & Area Info

Searching for Littleton Colorado zip codes helps residents and businesses manage mail, deliveries, and location services accurately. Understanding the specific codes in this Den...

Mara Ellison Jul 11, 2026
Littleton Colorado Zip Code Guide & Area Info

Searching for Littleton Colorado zip codes helps residents and businesses manage mail, deliveries, and location services accurately. Understanding the specific codes in this Denver suburb ensures faster service and clearer communication.

This guide to Littleton Colorado zip details covers area codes, delivery zones, and related planning information. Use the following sections to clarify boundaries and service areas for this suburb south of Denver.

Zip Code Area Name County Primary City Time Zone
80120 Littleton Main Arapahoe County Littleton Mountain Time
80123 Littleton South Arapahoe County Littleton Mountain Time
80125 Littleton Center Arapahoe County Littleton Mountain Time
80122 South Littleton Arapahoe County Littleton Mountain Time

Neighborhood Boundaries Within Littleton Colorado Zip

Central Business District and Downtown

The core of Littleton centers around historic downtown, where local shops, restaurants, and municipal offices concentrate. This area typically falls within 80120 and 80125, making postal routing consistent for businesses here.

Residential Areas South of Downtown

South Littleton, served largely by zip 80123 and 80122, features newer housing developments and family oriented streets. Delivery routes in these neighborhoods are optimized for residential consistency and timely service.

Postal Service Coverage and Delivery Details

USPS Operations in Littleton

Local post offices within the Littleton Colorado zip framework handle sorting and final delivery across Arapahoe County. Accurate zip codes reduce misroutes and ensure packages reach the correct neighborhood branch.

Additional Services and Pickup Options

Beyond home delivery, USPS offers parcel locker access and alternate pickup points in Littleton. Residents can choose secure options that match their schedule while still using the primary Littleton zip codes.

Area Codes and Infrastructure Information

Telephone and Digital Services

Littleton uses area code 303 and the newer overlay 720, which do not align exactly with postal codes. However, these area codes cover the same Arapahoe County region included in the 801xx zips.

Planning and Geographic Context

Because Littleton borders Denver and Englewood, some nearby addresses may qualify for different zips depending on street and building. Verifying the exact code before mail or online orders avoids delays across the Denver metro area.

Key Takeaways for Littleton Colorado Zip Usage

  • Confirm the exact zip code before sending time sensitive mail or packages.
  • Use 80120 for downtown businesses and 80123 for South Littleton residential areas.
  • Verify street level zip assignments when relocating or updating customer records.
  • Remember that area code 303 and 720 cover the same region as these postal codes.
  • Check online USPS tools for the most current delivery point validation.

FAQ

Reader questions

What is the primary zip code for downtown Littleton Colorado?

The main zip code for downtown Littleton is 80120, which covers most commercial addresses in the central business district.

Which zip code should I use for South Littleton residential mail?

For South Littleton homes, use zip code 80123 to ensure delivery through the correct local route and carrier path.

Do zip codes in Littleton affect school district boundaries?

While zip codes like 80120 and 80125 help identify general locations, school district boundaries are determined by street address rather than postal code alone.

Can a single street have multiple Littleton Colorado zip codes?

Yes, some north south streets in Littleton may shift between 80120 and 80122 depending on the exact building number and postal delivery routing.

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