| Official Name: | Kaser, New York |
| Settlement Type: | Village |
| Pushpin Map: | New York |
| Pushpin Map Caption: | Location within the state of New York |
| Mapsize: | 260px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Rockland |
| Leader Title: | Mayor |
| Leader Name: | Allie Pinkasovits |
| Leader Title1: | Trustees |
| Leader Name1: | Shlomo Koening, Lipot Muller, Eugene D. Neiman, and Israel Rosenberg |
| Established Title: | Incorporated |
| Established Date: | January 25, 1990 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.44 |
| Area Land Km2: | 0.44 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.17 |
| Area Land Sq Mi: | 0.17 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 5491 |
| Population Density Km2: | 12360.57 |
| Population Density Sq Mi: | 31924.42 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 165 |
| Elevation Ft: | 541 |
| Coordinates: | 41.1214°N -74.0669°W |
| Blank Name: | FIPS code |
| Blank Info: | 36-38934 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0979944 |
| Pop Est As Of: | 2023 |
| Pop Est Footnotes: | [2] |
| Population Est: | 5,699 |
Kaser (from yi|כּתר|keser|crown) is a village in the town of Ramapo, Rockland County, New York, United States. The village is completely surrounded by the hamlet of Monsey. As of the 2020 United States census, the village population was 5,491.
Kaser is a village with a population consisting almost entirely of Hasidic Jews of the Viznitz denomination. A total of 4% of Kaser's population claims Romanian ancestry, making Kaser the most Romanian census place in the United States.[3]
The village is the most densely populated municipality in New York State according to the 2010 census, being the only incorporated place in the state with a higher population density than New York City, and the 5th most in the United States.
Members of Viznitz, a Hasidic denomination, established Kaser in 1990 so they could build denser housing.[4] Herbert Reisman, the supervisor of the town of Ramapo, cooperated in the creation of Kaser because the town leaders also wanted to create more housing.[4]
The village of Kaser is on NY 306.
According to the United States Census Bureau, the village has a total area of 0.2 square mile (0.4 km2), all land.
As of 2010 census, 99.5% of the population was white.[5]
As of the 2000 census,[6] there were 3,314 people, 1647 households, and 1617 families residing in the village. The population density was 19342.6sp=usNaNsp=us. There were 678 housing units at an average density of 3954.9sp=usNaNsp=us. The racial makeup of the village was 98.61% white, .24% African American, .45% Asian, .03% Pacific Islander, and .66% from two or more races. Hispanic or Latino of any race were .54% of the population.
There were 1647 households, out of which 79.1% had children under the age of 18 living with them, 90.9% were married couples living together, 3.7% were female households with no husband present, and 4.5% were non-families. 3.2% of all households were individuals, and 1.9% had someone living alone who was 65 years of age or older. The average household size was 4.89 and the average family size was 5.04.
In the village, the population was spread out, with 53.4% under the age of 18, 18.2% from 18 to 24, 16.8% from 25 to 44, 6.2% from 45 to 64, and 5.4% who were 65 years of age or older. The median age was 16 years. For every 100 females, there were 99.4 males. For every 100 females age 18 and over, there were 93.7 males. The median income for a household in the village was $13,125, and the median income for a family was $13,191. Males had a median income of $20,500 versus $19,792 for females. The per capita income for the village was $5,147. About 65.0% of families and 66.4% of the population were below the poverty threshold, including 68.9% of those under age 18 and 43.4% of those age 65 or over. The village population grew by 43% from 2000 to 2010.
As of 1997, the town of Ramapo provides police.As of 2022, the village of Kaser provides garbage pickup services for Kaser residents.