For the next couple of weeks we will be checking out some homes in the most expensive zip codes in the United States, up today, 60043 . This zip code refers to the town of Kenilworth, Illinois. This zip code has a median price of $1,900,000 with an appreciation rate of 226% since 1990. Kenilworth is a planned community. In 1889, Joseph Sears purchased 223.6 acres for $150,300 to develop into an exclusive community. Over the years, Kenilworth has remained one of the wealthiest communities in the U.S.

Today's home isn't the most expensive in the region but it does demonstrate the large scale of homes in the area. This Prarie-style home has large open rooms with dramatic windows and arches and a stark contemporary black and white palette. There is a large indoor pool an a lower level great room. The six-bedroom home sits on just half an acre and is located a few blocks from Lake Michigan. This home is listed at $3,995,000.

For the next couple of weeks we will be checking out some homes in the most expensive zip codes in the United States, up today, 75220. This zip code refers to a part of Dallas, Texas. This zip code includes the prestigious Preston Hollow area and has a median price of $1,530,000 with an appreciation rate of 160% since 1990.

Today's estate is done in an English Country style and is over 15,000 square feet. There are three levels, plus a lower level which are accessible through
seven staircases and an elevator. The first level includes a two-story entrance, living room, dining room, library, family room, office, sunroon and a large kitchen that includes a Viking stove top and a hammered copper vent hood.

The second level is home to the master bedroom with his and hers baths, dressing rooms and a sunroom. There are also three additional en suite bedrooms on this level as well as a playroom, a five-desk computer/office area and a full-service laundry with a drip-dry area. The third level is a furnished space that also has a kitchenette and a full bath. The bottom level has a den or game room; a stone floored corking room; a pine-paneled smoking room; a media room; a sunlit workout/fitness center and a fifth bedroom with full bath. The property also includes a three-car garage, an outdoor area with a fireplace and grilling space and a swimming pool with a dramatic slate-backed water wall. This new home has been expertly staged (read an article about the stager here). It is listed at $8.6 million.

For the next couple of weeks we will be checking out some homes in the most expensive zip codes in the United States, up today, 29401. This zip code refers to the beautifully historic town of Charleston, South Carolina. This zip code in the fast-growing Southern city has a median price of $1,590,000 with an appreciation of 228% since 1990.

To explore this town we've got one beauty of an old home. This home on King Street in the historic district is the Patrick O'Donnell house it was built by O'Donnell over the period of 1852-1870 who was building the house for his bride but took so long finishing the job that his fiancé married another. The home was once lived in by the women who inspired the character of Melanie in Margaret Mitchell's Gone with the Wind.

The home has an 18th century Venetian palazzo exterior with a cross-ventilated New York brownstone interior and wide Charleston-style porches. The home has been beautifully restored. Details to swoon for include random width heart pine floors, heavy moldings and ceiling medallions, 11 fireplaces with faux marble mantles, French doors and an antique elevator. The kitchen has modern appliances such as Gaggenau ovens, Gaggenau commercial gas range, SubZero refrigerator and a walk-in wine cooler in a setting of exposed brick with a pressed tin ceiling. There is a billiards room, a cherry library with a track ladders, a bar room, guest bedroom with a cedar closet, large master suite, a bedroom with built-in children's beds and another guest room. The fifth floor is home to a rooftop deck, wet bar and outdoor shower. The property also includes a pool and a three-car garage and there is a guest house with a galley kitchen, bedroom and living room. This home is listed at $7.895 million.

For the next couple of weeks we will be checking out some homes in the most expensive zip codes in the United States, up today, 33037. This zip code lands us in Key Largo, Florida, an island paradise in the upper Florida Keys archipelago . This getaway famous for tourism diving and sport-fishing has been celebrated both in a Humphrey Bogart movie and a 1980s pop song by Bertie Higgins. This tropical vacation spot has a median price of $2,740,000 with an appreciation rate of 385% since 1990.

Today's estate isn't the most expensive one for sale in the area but it exemplifies the more luxurious side of Key Largo real estate. The property has both a five-bedroom main house and a guest house. The two-acre retreat on the water has tropical landscaping, a dock and a pool and spa. There is a large gourmet kitchen a double-height great room and plenty of windows and veranda space. One particularly nice detail is the loft which has a spiral staircase leading to a roof sun deck. This home is listed at $5,395,000.

For the next couple of weeks we will be checking out some homes in the most expensive zip codes in the United States, up today, 20815. This zip code is in Chevy Chase, Maryland has a median price of $2,020,000 and an appreciation rate of 253% since 1990. This residential Maryland suburb offers easy access to Washington D.C. and is home to a variety of traditional homes.

Today's home, Wirelawn was first purchased from the Chevy Chase Land Company in 1905. It's full of political history, Harry Truman's presidential inaugural ball was held here and the home, which is now a private residence, once served as an embassy. The ten-bedoom home has a grand foyer, formal living room, formal dining room, music room (with a beautiful Egyptian-themed mural), family room and ballroom. The first floor is also home to the sunroom, kitchen, butler's pantry and mudroom. The upper levels are home to the bedrooms including the master suite with his and hers baths and dressing area, bedroom suites with sitting rooms, and staff quarters. There is also a temperature-controlled wine cellar and a gentleman's study. The 1.36 acre property includes a covered veranda off the ballroom, large heated pool and spa, three-car garage, gazebo and pool house, tented terrace and deck, a circular drive, motor court and a lawn large enough to accommodate football and soccer games, or a tennis court. This home is listed at $6.9 million.