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Round Rock Zip Code Guide: Map, Neighborhoods & Real Estate Insights

12/28/2025

Round Rock, Texas, utilizes multiple zip codes that define its neighborhoods, school districts, and real estate markets. The primary zip codes are 78664 and 78681, with smaller portions of the city falling under 78665 and 78613. Understanding these boundaries is crucial for homebuyers and investors to accurately target property searches and assess location-based value.

Why Round Rock Zip Codes Matter for Real Estate

A zip code is a postal code used by the United States Postal Service (USPS) to efficiently route mail. In real estate, a zip code often correlates with specific school districts, municipal services, and community amenities, which directly influence property values. For anyone looking to buy, sell, or rent in Round Rock, knowing the zip code provides immediate insight into the neighborhood's character, average home prices, and proximity to major employers like Dell Technologies. This information is foundational for making informed decisions.

A Breakdown of Round Rock's Zip Codes and Their Profiles

Round Rock's layout means each zip code covers distinct areas with unique attributes. The following table provides a snapshot of the primary zip codes and their general characteristics.

Zip CodeCore Geographic AreaGeneral Real Estate Vibe
78664Central & Historic Round Rock, DowntownA mix of established single-family homes and newer townhome developments. Close to Old Settlers Park and Dell Diamond.
78681Northern & Western Round RockFeatures many master-planned communities with newer construction, parks, and top-rated schools.
78665Eastern Round RockIncludes areas near Highway 130, with a blend of suburban neighborhoods and more rural properties.
78613Southwestern Edge (shared with Austin)Captures neighborhoods near the Round Rock/Austin border, offering proximity to the larger city.

78664: The Heart of the City This zip code encompasses downtown Round Rock and its historic districts. Homebuyers will find a range of properties, from charming, older Freehold homes (a type of ownership where you own the land and the building outright) to modern infill projects. The area is known for its walkability to local shops, restaurants, and community events. Property Tax rates here are consistent with the city average, but the established nature of the neighborhoods can mean higher overall valuations.

78681: Suburban Growth and Family Focus Northwest Round Rock, covered by 78681, is a hub for family-oriented living. This area is dominated by communities like Forest Creek and Teravista, which offer amenities such as golf courses, swimming pools, and extensive trail systems. The real estate market here is characterized by newer construction, larger lot sizes, and access to highly-rated schools within the Round Rock Independent School District (RRISD). This often commands a premium compared to other parts of the city.

How to Use Zip Code Information in Your Home Search

When searching for a property, using the zip code as a filter on listing platforms is just the first step. Dig deeper by researching the specific school attendance zones within each zip code, as these can vary. Additionally, investigate community amenities and homeowners' association (HOA) fees, which are common in the 78681 area. Always verify the exact address with the listing agent, as postal boundaries can sometimes differ from city limits or school district lines.

Key Takeaways for Buyers and Sellers

For sellers, marketing your home with the correct zip code ensures it reaches the right audience. Highlighting the benefits of your specific zip code—such as top-tier schools or proximity to employment centers—can enhance appeal. For buyers, understanding the zip code landscape helps narrow the search to areas that align with lifestyle needs and budget. The zip code is a key data point that influences property value, so it should be a central consideration in any Round Rock real estate transaction. Always consult with a local real estate professional to get the most current market analysis for your desired area.

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