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Central Islip, NY vs Mastic Beach, NY

137
Central Islip
New York
VS
-0.5%
137
Mastic Beach
New York

Central Islip, NY and Mastic Beach, NY have a very similar cost of living, with only a 0.5% difference in their overall index. Central Islip scores 137 while Mastic Beach scores 137 on the cost of living index, where 100 represents the national average. The day-to-day expenses for residents in both cities are comparable, though differences emerge when looking at specific categories.

On the housing front, median rent in Central Islip is $2,106/month compared to $2,342/month in Mastic Beach — a 10% difference. Interestingly, home values tell a different story: while Central Islip has cheaper rent, Mastic Beach actually has lower median home values ($326,600 vs $405,000).

Median household income in Central Islip is $110,166 compared to $109,381 in Mastic Beach (+0.7%). Central Islip offers a double advantage: higher earnings combined with a lower cost of living, giving residents significantly more purchasing power. Looking at affordability, residents of Central Islip spend roughly 22.9% of their income on rent, less than the 25.7% in Mastic Beach.

Climate-wise, both cities share similar average temperatures (53.1°F vs 52.4°F). Central Islip receives more rainfall at 46" per year compared to 44.2" in Mastic Beach.

Income & Cost

Cost of Living Index
Central Islip
137
1% cheaper
Mastic Beach
137
Median Household Income
Central Islip
$110,166
1% higher
Mastic Beach
$109,381

Housing

Median Rent
Central Islip
$2,106
10% cheaper
Mastic Beach
$2,342
Median Home Value
Central Islip
$405,000
Mastic Beach
$326,600
19% cheaper
Population
Central Islip
37,751
Mastic Beach
16,382

Salary Equivalency Calculator

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Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
Central Islip $3.32
Mastic Beach $3.32
US $3.07
🥚
Eggs (grade A, large)
Central Islip $2.71
Mastic Beach $2.71
US $2.50
🥛
Milk (whole)
Central Islip $4.36
Mastic Beach $4.36
US $4.03
🍞
Bread (white)
Central Islip $2.00
Mastic Beach $2.00
US $1.85
🍗
Chicken breast
Central Islip $4.49
Mastic Beach $4.49
US $4.14
Electricity
Central Islip $0.24
Mastic Beach $0.24
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
Central Islip 53.1°F
Mastic Beach 52.4°F
Summer High
Central Islip 83°F
Mastic Beach 83°F
Winter Low
Central Islip 25°F
Mastic Beach 24°F
Rainfall
Central Islip 46"
Mastic Beach 44.2"
Rainy Days
Central Islip 122d
Mastic Beach 134d