Cities: North Caldwell, NJ (32.54%), Essex Fells, NJ (0.09%) County: Essex County, NJ. Estimated zip code population in 2017: 26,089 Zip code population in 2010: 24,812 Zip code population in 2000: 26,192 Houses and condos: 10,200 In the most recent US census the population of North Caldwell was 6183. NORTH CALDWELL Zip Code (NJ) The Zipcode for North Caldwell is . North Caldwell is a borough of Essex, New Jersey in the Mid Atlantic region of the USA. poblation Type ZIP Code; North Caldwell, NJ: 22.600: STANDARD: 07006: Location of North Caldwell, NJ - USA. Check the list of New Jersey ZIP Code. ZIP code 07006 is located in northeast New Jersey and covers a slightly less than average land area compared to other ZIP codes in the United States. City Est. North Caldwell, New Jersey Area Code and Zip Code : Area Code: 973 07006 Zip Code (North Caldwell, NJ) Detailed Profile. 2010 Census Database ZIP Code New Jersey. It is located about 50 miles north-northeast of NJ's capital city of Trenton. The people living in ZIP code 07006 are primarily white. Key Zip or click on the map.. Advertisement. Canadian Postal Code Database Get all Canadian Postal Codes and their information in one easy to use database. load map. CALDWELL,NJ, ZIP Code 07006 - Database - CALDWELL New Jersey NJ Map. It also has a slightly higher than average population density. ZIP Code Database Get all US ZIP Codes and their information in one easy to use database. ZIP-Codes.com Products. Area Codes … Check the map below to check your ZIP Code. ZIP+4 ZIP Code Database Covering every address in the U.S., get the +4 information you need. The location North Caldwell, NJ has 1 differents ZIP Codes. Nearest Zip Codes: 07006 - Caldwell, NJ 07044 - Verona, NJ 07009 - Cedar Grove, NJ 07021 - Essex Fells, NJ 07004 - Fairfield, NJ 07512 - Totowa, NJ 07424 - Little Falls, NJ 07042 - Montclair, NJ 07043 - Montclair, NJ 07068 - Roseland, NJ 07052 - West Orange, NJ 07028 - Glen Ridge, NJ 07035 - Lincoln Park, NJ 07013 - Clifton, NJ 07003 - Bloomfield, NJ