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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2023

Zip Code 11784, Selden, NY

ZIP Code 11784 Details

Zip Code:11784
State:NY [New York]
Counties:SUFFOLK, NY
Multi County:No
City Alias(es):Selden
City Alias(es) To Avoid Using:Old Westfield
Area Code:631 / 934
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Eastern (GMT -05:00)
Observes Daylight Saving:Yes
Elevation:95 ft
State FIPS:36
County FIPS:103
Division:Middle Atlantic
Intro Date:<2004-10

ZIP Code 11784 2010 Census Demographics

Current Population:23,691
2010 Population:24,655
Households per ZIP Code:8,009
Average House Value:$353,300
Avg. Income Per Household:$93,250
Persons Per Household:3.07
White Population:21,728
Black Population:1,033
Hispanic Population:3,242
Asian Population:1,254
American Indian Population:182
Hawaiian Population:28
Other Population:1,052
Male Population:12,194
Female Population:12,461
Median Age:37.30 years
Male Median Age:35.40 years
Female Median Age:39.20 years

ZIP Code 11784 Other Demographics

# Residential Mailboxes:7,717
# Business Mailboxes:371
Total Delivery Receptacles:8,629
Number of Businesses:472
1st Quarter Payroll:$25,564,000
Annual Payroll:$99,993,000
# of Employees:3,467
Water Area:0 sq mi
Land Area:5.479 sq mi
118th Congressional District:01
118th Congressional Land Area:650.02 sq mi
Single Family Delivery Units:7,048
Multi Family Delivery Units:184
# Residential Mailboxes:7,717
# Business Mailboxes:371
Total Delivery Receptacles:8,629

ZIP Code 11784 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 4,480 4,485 +5
Retired Workers: 2,835 2,870 +35
Disabled Workers: 785 780 -5
Widow(er)s and Parents: 305 305 0
Spouses: 175 180 +5
Children: 380 350 -30
65+: 3,120 3,155 +35
Monthly Benefits - All: $6,484,000 $6,763,000 +$279,000
Monthly Benefits - Retired Workers: $4,480,000 $4,673,000 +$193,000
Monthly Benefits - Widow(ers): $458,000 $474,000 +$16,000

ZIP Code 11784 Statistical Areas

CBSA: 35620
CBSA Name: New York-Newark-Jersey City, NY-NJ-PA
CBSA Type: Metro
CBSA Division: 35004
CBSA Division Name: Nassau County-Suffolk County, NY
CBSA Population:18,897,109
CBSA Division Population:2,832,882
MSA: 5602
MSA Name: New York-Northern New Jersey-Long Island, NY-NJ-CT-PA
PMSA: 5380
PMSA Name: Nassau-Suffolk, NY PMSA
City State Key:V16006
Preferred Last Line Key:V16006
11783: Previous ZIP Code
Next ZIP Code: 11786


  1. U.S. Postal Service [Last Updated: 5/1/2023],
  2. Internal Data Creation [Last Updated: 5/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census American National Standards Institute (ANSI) [Last Updated: 5/1/2023],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],