Mountainside, Union County, New Jersey Property Taxes
Median Mountainside, NJ effective property tax rate: 2.00%, significantly higher than the national median of 1.02%, but lower than the NJ state median of 2.82%.
Median Mountainside, NJ home value: $576,500
Median annual Mountainside, NJ tax bill: $11,432, $9,032 higher than the national median property tax bill of $2,400.
How are property taxes in Union calculated?
Property taxes in Mountainside, NJ are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding Mountainside’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Mountainside, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
Mountainside, Union County, New Jersey Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2%
Estimate Property Tax Bill
$11,530
$10,700
Property Tax Rates Across Mountainside, Union County, New Jersey
Local government entities set tax rates, which can vary widely within a state. Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate. While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process. Below, you can compare Mountainside’s effective property tax rate to other cities in New Jersey and the median property tax rates in New Jersey and the U.S.
Mountainside in Union County, NJ, has a median property tax rate of 2.00%, which stands significantly higher than the national median of 1.02%. This places a considerable burden on property owners compared to the national average. The tax rate in Mountainside also aligns with the highest and lowest median tax rates within its zip code, emphasizing a uniform tax landscape in the area. New Jersey's property tax rates are among the highest in the nation, reflecting the state's commitment to funding local services and schools through property taxes. Understanding these rates can help property owners plan and potentially seek appeals or exemptions to manage their tax liabilities better.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Mountainside Tax Rate
2.00%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Union County Tax Rate
6.95%
Median Effective New Jersey Tax Rate
2.82%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Mountainside, Union County, New Jersey
Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
07092 | 1.86% | 2.00% | 2.00% | 2.00% | 2.00% |
Source: Ownwell
Property Tax Assessment Values Across Mountainside, Union County, New Jersey
When examining property taxes in Mountainside, NJ, understanding the distinction between "market value" and "assessed value" is crucial. The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Union County assessment district estimates the market value for tax purposes. The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
In Union County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of April. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Mountainside.
For example, the median home price in Mountainside is $576,500, with tax bills ranging significantly across the county. Zip code 07092 has the highest median home price at $576,500.
Property Tax Assessment Values Across Mountainside, Union County, New Jersey
Source: Ownwell

$54,000
$394,450
$734,900
Median Mountainside Market Value
$576,500
Median Union County Market Value
$138,900
Median New Jersey Market Value
$282,900
Median United States Market Value
$235,294
Property Tax Assessment Values Across Mountainside, Union County, New Jersey
Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
07092 | $454,230 | $506,500 | $576,500 | $693,550 | $869,700 |
Source: Ownwell
Property Tax Bills Across Mountainside, Union County, New Jersey
Median Mountainside Tax Bill
$11,432
Median Union County Tax Bill
$10,366
Median New Jersey Tax Bill
$8,227
Median United States Tax Bill
$2,400
Property Tax Bills Across Mountainside, Union County, New Jersey
Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
07092 | $8,728 | $10,002 | $11,432 | $13,833 | $17,555 |
Source: Ownwell