Nassau County
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Nassau County is a suburban county in the New York Metropolitan Area east of New York City in the U.S. state of New York. As of the 2000 census, the population was 1,334,544. The name of the county comes from an old name for Long Island, which was at one time named Nassau, after Dutch William of Nassau, Prince of Orange (who later also ruled as King William III of England.) The county colors, orange and blue, are also the colors of the House of Orange. Nassau County's county seat is located in the Village of Garden City however it is within the Mineola, New York, 11501 Zip Code. Therefore, the county seat is commonly referred to as being in Mineola.

Nassau and Suffolk counties together are generally referred to as "Long Island" by area residents — as distinct from the New York City boroughs of Queens (Queens County) and Brooklyn (Kings County), which physically make up the island's westernmost end.

In 2005, Forbes magazine named Nassau County, along with Suffolk County, New York, as the safest region in the United States, with the lowest crime rate.

As of 2008, Nassau County is the second richest county per capita in the State of New York and the 10th richest in the nation, with a median household income of $85,994.