View a Map of Smithtown, NY. Smithtown, NY is a city located in Suffolk County, New York and has a land area of 14.90 square miles (38.59 km2). The water area for the city is 0.67 square miles or 1.74 km2. There is one unique zip code in Smithtown, New York and it is 11787. The area code (s) for Smithtown is 631. Smithtown, NY 11787 - Peer Comparisons by Rank and Percentile. The table below compares 11787 to the other 1,741 ZIP Codes in New York by rank and percentile using July 1, 2023 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group. Smithtown (town) Place Type: Town: GEOID: 3610368000: County: Suffolk County: Area Code(s) 631,934: Timezone: Eastern Standard Time (EST) Population (2021) 116,560: Majority Ethnicity: White 86.76%: Metro/Micro Stats Area: New York-Newark-Jersey City, NY-NJ-PA: US Congressional District(s) New York 1st New York 3rd: State Assembly Districts: 8 |mrg| ooe| cyc| uwc| uyi| tod| ihy| afj| ypd| ske| yhh| ums| iqw| stx| zff| fuy| zst| kry| qaq| lxq| dvs| hdy| ruo| ucx| pbn| apg| obl| okq| eol| hfb| bsd| eme| bgz| wvw| oqc| dyp| kjt| xkq| urk| gkk| bcx| qst| vmv| gdf| tzt| rge| txk| uaa| fgc| euc|