How many zip codes are in Montgomery County New York?

Montgomery County, New York contains 15 zip codes.

What is the county seat of Montgomery County?

The county seat of Montgomery County, New York is Fonda.

What cities are in Montgomery County?

Montgomery County USPS city names in this directory include Amsterdam, Fort Plain, Saint Johnsville, Canajoharie, Fultonville, Fonda, Fort Johnson, Esperance and 7 more. The county seat is Fonda.

What is the population of Montgomery County?

The population of Montgomery County, New York is approximately 58,156.

What zip codes are in Montgomery County?

Montgomery County contains 15 zip codes: 15 standard delivery ZIPs. Browse the table on this page for the complete list.

Montgomery County, New York Zip Codes

📍 Montgomery County has 15 zip codes with a population of 58,156.

County

Montgomery

County Seat

Fonda

Zip Codes

Population

58,156

Montgomery County is located in New York with a land area of 550 square miles. The county seat is Fonda. Below you'll find all 15 zip codes in Montgomery County with population, income and home value, the county's affordability profile, and links to its 15 city pages.

Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).

All Montgomery County Zip Codes

ZIP Code	City	County	Population	Median Income	Median Home	Details
12010	Amsterdam	Montgomery	27,339	$60,013	$161,500	View →
12016	Auriesville	Montgomery	—	—	—	View →
12066	Esperance	Montgomery	1,830	$71,250	$174,600	View →
12068	Fonda	Montgomery	2,717	$73,050	$170,700	View →
12069	Fort Hunter	Montgomery	387	—	$151,800	View →
12070	Fort Johnson	Montgomery	2,404	$78,884	$163,900	View →
12072	Fultonville	Montgomery	3,019	$86,442	$185,200	View →
12086	Hagaman	Montgomery	1,644	$81,556	$208,200	View →
12166	Sprakers	Montgomery	1,459	$90,147	$187,500	View →
12177	Tribes Hill	Montgomery	361	$89,890	—	View →
13317	Canajoharie	Montgomery	3,970	$69,250	$119,700	View →
13339	Fort Plain	Montgomery	6,131	$57,885	$93,000	View →
13410	Nelliston	Montgomery	575	—	$55,700	View →
13428	Palatine Bridge	Montgomery	1,470	$73,250	$169,100	View →
13452	Saint Johnsville	Montgomery	4,850	$65,890	$106,500	View →

Montgomery County at a Glance

Residents (ZIPs with data)

58,156

Median household income

$73,050

Median home value

$169,100

Price-to-income ratio

2.1

Median rent

$859

Owner-occupied

81%

Bachelor's degree+

20%

Poverty rate

11.9%

Montgomery County has 15 ZIP codes in this directory: 15 standard delivery ZIPs. The 11 ZIPs with published Census housing data cover 58,156 residents, the largest being 12010 (Amsterdam) with 27,339 people.

The median ZIP in Montgomery County has a household income of $73,050 and a home value of $169,100, a price-to-income ratio of 2.1, below the 2.9 New York ZIP median. Affordability ranges from 13339 in Fort Plain at a ratio of 1.6 to 12086 in Hagaman, where the median home is $208,200. The highest median income is in 12166 (Sprakers) at $90,147. Median rent across these ZIPs is $859 a month.

81% of households in the typical Montgomery County ZIP own their home (statewide ZIP median 80%). 20% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 11.9%, above the 9.9% statewide ZIP median. Overall density is about 106 residents per square mile across 550 square miles of ZIP land area.

Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 New York ZIP Code Affordability Report.