10 Most Expensive Zip codes In The US

A well-known term used by the United States Postal Service is ZIP Code. It is used as a postal code (USPS). The main goal is to make it easier to get mail to people faster and more quickly. Postcodes are made up of five digits that show where the sender or recipient of the postcard is. Using it, the USPS can quickly find an important message and separate it from all the other letters and parcels.

Now, it’s easy to search for zip codes and look them up by giving your city and street where you live. With the help of these services, you can find your ZIP Code in just a few seconds. People don’t all have great memories, so many forget the postcodes. So, postal code search services can be beneficial. 

 Let’s take a look at the most expensive Zip codes in the US.

What Are Zip Codes?

A ZIP Code is a postal code used by the United States Postal Service to find places in the country (USPS). Introduced in 1963, the basic format had five digits in it. In 1983, an extended ZIP+4 code was made available. It had the five digits of the ZIP Code, followed by a hyphen and four more digits that helped people find more specific places.

“ZIP” is an acronym for Zone Improvement Plan, and it was chosen to imply that mail moves more swiftly and efficiently when the ZIP code is included in a postal address by mailers. The US Postal Service (USPS) initially registered the term “ZIP Code” as a service mark; however, that registration was subsequently revoked in 1997.

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What Are The Types Of Zip Codes?

The ZIP Codes come in four different types:

  • Unique: assigned to a single address with a lot of people.
  • Post Office Box-only: used only for PO Boxes at a certain place, not for any other deliveries.
  • In the military, they use them to get mail for the US government.
  • There are a lot of other ZIP Codes that are standard.

1. Unique zip codes

Unified postal codes (ZIP codes) are high-volume mail receivers that accept mail at a single place and subsequently distribute the mail within the organization. Big corporations, government buildings, universities, and large medical facilities are among the types of organizations that employ unique ZIP codes.

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2. Military zip codes

In addition to being assigned their own ZIP Code, which corresponds closely to the Military Gateway city’s ZIP, each APO and FPO is also organized by country or region — the first two numbers designate the routing center, the third number designates the country or region within the “state,” and the fourth number designates the routing center within the “country”

3. Post office Box

ZIP codes are critical to your success if you want to ensure that your postal mail is processed efficiently and without any delays or bottlenecks. The ZIP codes allow postal agencies such as the United States Postal Service (USPS) to quickly identify and sort postal mail sent to a specific destination. Postal mail may be delayed if ZIP codes are not included in it. Postal mail that does not have a ZIP number on it may be required to be handled manually, resulting in unnecessary delays that could have been avoided if you had provided the ZIP codes in advance.

4. Standard zip codes

In certain extreme circumstances, a ZIP Code theoretically of the Standard type may be used in practice as one of the other three types. When it comes to Columbus, Ohio’s ZIP Code 43210, it is classified as a Standard-type ZIP Code. Because its geographic borders are essentially coterminous with those of the Ohio State University’s main campus, it is effectively unique to the university, even if it is not formally a “Unique” ZIP Code of the type used by other businesses and organizations.

The most expensive zip codes can be under any of these categories.

Why Are Zip Codes Used?

Here are a few reasons why zip codes are used in the U.S.

1. ZIP codes are a sort of postal code that is used in the United States

Individuals who send letters or packages through the United States Postal Service (USPS) are required to include the code as part of the address on the correspondence. This five-digit code is used to guarantee that parcels arrive at their designated location as quickly as possible. Even the name zip, which stands for Zone Improvement Plan, evokes a sense of urgency and rapidity.

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2. It makes it easy to sort and deliver

A postal sorter can decide where a parcel should be delivered by looking at the numbers contained in these codes.

ZIP codes are used to designate specific areas or regions of the United States, and each digit represents one of these areas or regions (US). Some are used to represent vast geographic areas, such as the east or west coasts, while others are used to represent specific states, cities, and towns. When you look at any of the codes, the first digit refers to a vast geographic region.

Typically, this refers to a group of states next to one another. For example, the New England states, including Maine, Massachusetts, Vermont, and Connecticut, are represented by codes that begin with the number zero. They also represent US territory, such as Puerto Rico and the US Virgin Islands, internationally.

When it comes to zip codes, those that begin with the number nine generally correspond to states around the west coast. For example, the states of California, Oregon, and Washington all have zip codes that begin with the number nine.

Additionally, Alaska and Hawaii have zip codes that begin with the number nine. The following two digits designate a specific sectional center facility, and so on. These United States Postal Service facilities are in charge of sifting the mail even further. They are frequently found in densely populated metropolitan regions.

3. The final two digits represent a particular location

The final two digits designate an even more particular location, which is typically a post office. This is situated within the geographical area denoted by the first digit of the code. It is also usually in close proximity to the sectional center facility as well. It is possible for some addresses that handle a considerable volume of incoming mail to have their own zip numbers, which are referred to as unique zip codes.

The White House, for example, features the zip code 20006 on its door. Apart from the White House, other government buildings in the United States have been issued codes that begin with the numbers 202 through 205, regardless of where they are located. University campuses and other similar facilities may also have their own postal codes assigned to them.

10 Most Expensive Zip Codes In The US

These are the 10 most expensive zip codes in the US.

1. Atherton, California (94027)

Median home sale price in 2021: $7,475,000. In September 2010, Forbes magazine ranked Atherton’s ZIP code of 94027 as the second most expensive zip code in the country on its annual list of the nation’s most expensive zip codes. But as of this year, it is ranked number 1.

2. Boston, Massachusetts (02199)

Median home sale price in 2021: $5,500,000.When compared to other ZIP codes in the United States, ZIP code 02199 is located in northern Massachusetts and covers a significantly smaller than average land area. It is the second most expensive zip code in the US.

3. Sagaponack, New York (11962)

Median home sale price in 2021: $5,000,000. According to Business Insider, the 11962 ZIP Code, which encompasses Sagaponack, was named one of the most expensive ZIP Codes in the United States in July 2015.

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4. Ross, California (94957)

Median home sale price in 2021: $4,583,000. The ZIP code 94957 is located in western California and contains a somewhat less than average land area compared to other ZIP codes in the United States. It also has a slightly less than average population density compared to other ZIP codes in the United States of America.

5. Miami Beach, Florida (33109)

Median home sale price in 2021: $4,475,000. The majority of the population of ZIP code 33109 is composed of white people. (Ambien) There are a disproportionately high number of elderly, and a disproportionately high number of middle-aged persons. Furthermore, there are a limited number of single parents and a high number of families in the area. When compared to other locations in the country, the 33109 ZIP code has an extremely low number of children under the age of 18.

6. Beverly Hills, California (90210)

Median home sale price in 2021: $4,125,000. BEVERLY HILLS, California is the official postal address for the city of 90210 according to the United States Postal Service. Parts of zip code 90210 are included within or border the city limits of Los Angeles, CA, Beverly Hills, CA, and West Hollywood, CA, among other cities in California. The zip code 90210 is located within the boundaries of area codes 424, 310, and 818.

7. Santa Barbara, California (93108)

Median home sale price in 2021: $4,103,000. Not to mention the fact that Santa Barbara is widely regarded as one of the most expensive cities in all of California’s central region. Despite the fact that the city is home to the wealthy and famous, 13 percent of its residents remain below the poverty line as a result of the high cost of living.

8. Santa Monica, California (90402)

Median home sale price in 2021: $4,058,000. In 2018, the per capita income in Santa Monica was $75,481, making it a rich city when compared to the rest of California and the rest of the US. This corresponds to a family of four earning $301,924 per year, which is a substantial amount of money. Santa Monica, on the other hand, is home to both extremely wealthy and impoverished individuals. Santa Monica is a city with a remarkably diverse ethnic population.

9. Los Altos, California (94022)

Median home sale price in 2021: $4,052,000. The median home price in the 94022 ZIP code, which encompasses parts of Los Altos Hills, California, is $4.9 million, and it has been on the market for an average of 120 days, according to Zillow.

10. Medina, Washington (98039)

Median home sale price in 2021: $4,000,000. Medina, Ohio, has a population of slightly more than 3,000 people and is the tenth most expensive zip code in the United States, with a median home value of $4 million and a median household income of $186,464, according to the most currently available data.


The 94027 ZIP code in Atherton, California, has retained its title as the most expensive ZIP code in the United States for the fifth consecutive year. According to data from Property Shark, the Bay Area suburb is by far and away the most expensive place to live in the country in 2021, with a median sale price of $7.47 million.

FAQs On Most Expensive Zip codes In The US

The factors used to determine a life insurance policy do not include location. Your address and zip code is a factor when it comes to home insurance and auto insurance but for life insurance, it does not matter.

Atherton 94027 in Silicon Valley, California

ZIP Codes are an integral part of making sure the mailpiece is processed quickly and efficiently.

There’s a reason why Atherton has remained pricey – and that’s by being a not-very-good neighbor to the rest of California. According to housing advocates, the town has set up legal boundaries to remain exclusive and put up obstacles against efforts to build affordable housing during a statewide housing crisis.


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