The postal code system, essential for efficient mail delivery and logistical operations, utilizes specific numeric designations for geographic areas. For the town of Castle Rock, Colorado, these numerical codes facilitate accurate routing of mail and packages, ensuring residents and businesses receive correspondence promptly. For instance, the primary postal code associated with the core area of Castle Rock is 80104, while other codes, like 80108 and 80109, serve surrounding areas within the town’s limits.
Accurate postal codes are critical for various applications beyond mail delivery. They play a vital role in demographic analysis, market research, emergency services dispatch, and location-based services. Historically, the implementation of the Zone Improvement Plan (ZIP) codes in the 1960s significantly enhanced the efficiency of the United States Postal Service, enabling more precise sorting and faster delivery times. This system’s continued relevance supports economic activity and community development by ensuring reliable communication and logistical processes.