Delaware Zip Code

by Joanne Miller
Delaware Zip Code

Understanding Delaware Zip Codes

Delaware zip codes are an important part of living and working in The First State. Whether you are a resident, a business owner, or a job seeker in Delaware, understanding zip codes is important for accessing local goods and services, finding employment opportunities, and staying up to date with state regulations and guidelines. This guide will give you an overview of Delaware zip codes and provide helpful information about their uses and applications.

History of Delaware Zip Codes

Zip codes in Delaware first came into use in the late 1940s when the United States Postal Service implemented its five-digit code system across the nation. At that time, Delaware was assigned two main zip codes: 19971 for the southernmost region and 19735 for the northernmost region. Over the years, additional zip codes were created and assigned in Delaware as higher population densities required more detailed geographic categorization.

Types of Zip Codes in Delaware

Today, there are two main types of zip codes in Delaware: county-based and municipally-based. County-based zip codes are assigned to a geographic area within the entire county, while municipally-based zip codes are assigned to an individual city or town within the county. Municipally-based zip codes are typically shorter than county-based zip codes.

Specific Zip Codes in Delaware

Below is a list of specific zip codes in Delaware by county and municipality. Please note that these may be subject to change over time:

  • New Castle County (county-based): 19720, 19730, 19731
  • New Castle County (municipally-based): 19802 (Wilmington), 19803 (Newark), 19804 (Hockessin)
  • Kent County (county-based): 19950, 19951
  • Kent County (municipally-based): 19975 (Dover), 19977 (Camden)
  • Sussex County (county-based): 19952, 19954
  • Sussex County (municipally-based): 19973 (Georgetown), 19971 (Rehoboth Beach)

History of Delaware Zip Codes

Delaware has had a long history of using zip codes for mailing purposes. The United States Postal Service (USPS) established the first system of postal delivery in the 1800s. As mail delivery began to expand, many states, including Delaware, adopted zip codes to help postal workers quickly sort and deliver mail to its intended recipient.

Over the years, the implementation of zip codes in Delaware have evolved as new areas were developed and population increased. In 1983, the USPS enacted five-digit zip codes and introduced a “plus four” system for more precision. Today, postal workers in Delaware use nine-digit zip codes in order to get mail to the right place.

Types of Zip Codes in Delaware

Zip codes in Delaware are categorized into two types – county-based and municipally-based. County-based zip codes are more commonly used in rural areas where there may not be a definitive boundary between two counties or townships. These zip codes are most often used by residents of a certain county and are needed for local government services. Municipally-based zip codes are used within city limits and are usually applied to businesses, organizations, and other entities in urban areas.

When looking up zip codes, one should be aware of the difference between county-based and municipally-based codes, as this can help to ensure that one is using the correct zip code for their specific address.

Specific Zip Codes in Delaware

Delaware has many different zip codes, divided by counties or municipalities. Knowing the zip code associated with the city or county you’re looking for can be helpful when searching for specific goods and services in the area. Here is a list of the zip codes in each county of Delaware:

  • New Castle County: 19720, 19721, 19730, 19731, 19732, 19733, 19734, 19735, 19736, 19737, 19738, 19739, 19801, 19802, 19803, 19804, 19805, 19806, 19807, 19808, 19809, 19810, 19850, 19880, 19884, 19885, 19886, 19890, 19891, 19892, 19893, 19894, 19895, 19896, 19897, 19898, 19899
  • Kent County: 19901, 19902, 19903, 19904, 19905, 19906, 19930, 19931, 19933, 19934, 19936, 19938, 19939, 19940, 19941, 19943, 19944, 19945, 19946, 19947, 19950
  • Sussex County: 19920, 19930, 19939, 19947, 19951, 19952, 19953, 19954, 19955, 19956, 19958, 19960, 19966, 19967, 19968, 19969, 19971, 19973, 19975, 19977, 19979

Using Zip Codes in Delaware to Access Local Goods and Services

Zip codes are extremely important for accessing goods and services in Delaware. By entering a zip code, you can locate local businesses that may provide the products or services you need. In addition, zip codes are used by many organizations and businesses to target their services and resources specifically to certain areas. For example, many companies may have special offers that are only available within specific zip codes.

To use a Delaware zip code to access local goods and services, you will first need to find out your specific zip code. You can do this by referencing Delaware’s official zip code directory or by checking with your local post office. Once you know your zip code, you can search for businesses within your local area that may be offering the products and services you need. It is also advisable to check online for businesses that may be offering discounts or other deals within your zip code.

In addition, many organizations in Delaware use zip codes to distribute resources to communities in need. By looking up your zip code, you may be able to access grants, scholarships, and other programs that are available in your area. This can be a great way to get assistance in times of difficulty. Finally, it is important to remember that zip codes are sometimes used by employers for recruitment and selection purposes, so it is important to ensure that your zip code is accurate before applying for a job.

Common Post Office Box Numbers in Delaware

Post office box numbers are used for mailing purposes in Delaware and across the United States. Some common post office box numbers that are found in Delaware include:

  • 20420: Wilmington, DE
  • 20381: Newark, DE
  • 19808: Claymont, DE
  • 19806: Wilmington, DE
  • 19711: Bear, DE
  • 19958: Milford, DE

These are just a few examples of post office box numbers that are found throughout Delaware. It is important to check with local postal offices for a full list of post office box numbers in your area.

Understanding How Zip Codes Impact Recruitment and Selection

Zip codes can be used as a deciding factor when it comes to recruitment and selection. While employers are not able to use zip codes as the sole determining factor for hiring decisions, they do play a role in the selection process. Employers might use zip codes to attract more local candidates or to narrow down their pool of potential hires.

It is important for employers to understand the legal implications of using zip codes for recruitment and selection. Employers must make sure that their practices comply with all applicable federal, state, and local laws. For example, employers cannot use zip codes to intentionally discriminate against an individual on the basis of race, color, religion, sex, national origin, age, disability, or other legally protected characteristics.

As stated above, zip codes can be a useful tool for employers when searching for potential hires. By focusing their search on local zip codes, employers can often find qualified candidates who have the same values and cultural beliefs as the organization. This helps to reduce the time and resources spent on interviewing out-of-area applicants. Additionally, by employing local workers, businesses are able to increase their visibility in the community and build meaningful relationships with those living in the immediate area.

Strategies to Maximize the Use of Delaware Zip Codes in Business

Using zip codes in Delaware can be a powerful way for businesses to target their local customers. By understanding the zip codes in Delaware and how they are used, businesses can create effective marketing campaigns that will reach potential customers more effectively. Here are three strategies for using Delaware zip codes in your business.

  • Analyze the Location of Your Customers: By analyzing the zip codes of current and potential customers, businesses can get a better understanding of where their customers are located and how far they are willing to travel. This can be useful when deciding where to place advertisements or how much to charge for shipping to certain areas.
  • Establish a Local Presence: By investing in local businesses, such as sponsoring events or charities, businesses can increase their visibility within the community and create a local presence. This can be done by reaching out to local newspapers and other media outlets to promote your company.
  • Target Specific Zip Codes: By targeting specific zip codes, businesses can craft effective marketing campaigns to reach potential customers. For example, a company might create an advertisement that is only visible to people in a certain zip code, such as a zip code with a high concentration of families or college students.

By utilizing these strategies, businesses can make the most out of Delaware zip codes and effectively target their local customers.

Advice for Job Seekers in Delaware

Job seekers in Delaware have the opportunity to use their zip codes to their advantage when looking for employment. Whether you are a recent college graduate or an experienced professional, knowing the zip code of the area in which you are applying to can help you to focus your job search. Understanding the local economy and industry trends can help you to tailor your resume and cover letter to the exact job you are applying to.

You can also use the information gathered through researching the zip code area to make connections and network with people in the local business community. Connecting with people that already have a foot in the door can be incredibly helpful in finding job opportunities. Additionally, engaging in civic activities or attending local events is a great way to make meaningful connections.

In addition to researching the zip code area, job seekers should keep up with new technologies and trends in the job market. With the rise of advances in technology, the job market is constantly changing. Job seekers need to stay on top of their game and be ready to adapt to any incoming changes. Furthermore, they should also take advantage of any online resources available, such as career websites or social media platforms, to grow their network and find job opportunities.

Overall, knowing and understanding the Delaware zip code can be a very helpful tool for job seekers. Whether you need to network, research the area, or just stay up-to-date on the job market trends, using the zip code to your advantage can go a long way when it comes to finding employment.

Examples of Zip Codes in Delaware

Zip codes are important tools for locating a specific address and accessing local goods and services. In Delaware, some examples of zip codes include 19720 for Newark, 19804 for Wilmington, 19938 for Harrington, and 19971 for Lewes. Other notable zip codes include 19711 for Bear, 19801 for Dover, 19808 for Hockessin, and 19958 for Rehoboth Beach.

Each zip code helps identify and locate places within specific cities or towns in Delaware. For example, the zip code 19720 covers the greater Newark area, whereas 19971 covers Lewes. This enables people to easily identify locations within the state when searching for them.

Understanding zip codes can be beneficial for entrepreneurs and businesses looking to target local customers. Knowing which zip codes cover specific areas can help businesses better understand where potential customers reside so that they can focus their efforts accordingly.


The purpose of this guide was to provide a comprehensive overview on Delaware zip codes. We explored the history of Delaware zip codes, discussed different types and provided lists of specific zip codes in Delaware. Furthermore, we covered how zip codes are used for local goods and services, common post office box numbers in Delaware, and how zip codes impact recruitment and selection decisions. Lastly, we looked at strategies to maximize the use of Delaware zip codes in business and gave advice for job seekers in Delaware.

Delaware zip codes can be a powerful tool for businesses and job seekers alike. They can help narrow down customers and target the right audience for goods and services, as well as maximize job search efforts. Ultimately, Delaware zip codes are a valuable resource that should not be under utilized.

Resources on Delaware Zip Codes

In this guide, there are numerous resources available for those seeking more information or assistance with Delaware zip codes. Here is a list of resources that may be of use:

1. Delaware’s Department of State: The state’s Department of State (DOS) provides guidance on all matters of Delaware law, including zip codes and post office boxes. You can find the phone number, address, and website of the DOS online.

2. United States Postal Service: The United States Postal Service (USPS) is the official mail carrier of the United States and has an extensive database of zip codes and post office box numbers. Check out their website for more information on Delaware zip codes.

3. Local County Clerks: If you are looking for specific zip codes in Delaware, visit the county clerk in the county you are interested in to get the most accurate information.

4. Businesses in Delaware: Businesses in Delaware often know their local zip codes and can help point you in the right direction. Contact them for more information.

5. Online Resources: There are many helpful online resources that can provide more detailed information on Delaware zip codes. Just do a quick search to find what you are looking for.

Using these resources can help you get the most up-to-date information on Delaware zip codes and post office boxes and make sure you are using the correct ones when sending out mail or searching for new job opportunities.

FAQ About Delaware Zip Codes

  • Q: What is a zip code?
    A: A zip code is a system of postal codes used by the United States Postal Service (USPS) to identify areas for the delivery of mail.
  • Q: Why are zip codes important?
    A: Zip codes are important because they make it easier and faster for mail and goods to be delivered. Zip codes also provide businesses with information about their local customers.
  • Q: What is the history behind Delaware zip codes?
    A: Delaware was among the first states to implement zip codes in the mid-1960s. These zip codes were initially rolled out county-by-county, and later based on municipal boundaries.
  • Q: What are the different types of zip codes in Delaware?
    A: Zip codes in Delaware can be county-based or municipally-based. County-based zip codes generally cover multiple municipalities, while municipally-based zip codes primarily exist within one municipality.
  • Q: How can I use a Delaware zip code to access local goods and services?
    A: Delaware zip codes can be used to target marketing efforts to local customers, or to access specific goods and services in the area. Additionally, zip codes can be used to determine what tax rate applies in an area.
  • Q: What strategies can businesses use to maximize the use of Delaware zip codes?
    A: Businesses should take advantage of the geographic-based targeting capabilities of zip codes to target local customers. Additionally, they should also use zip codes to identify the most favorable tax rates in their areas.
  • Q: What advice do you have for job seekers in Delaware?
    A: Job seekers in Delaware should use their zip code when searching for jobs and applying for positions. They should also research job openings in their area to identify appropriate employment opportunities.

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