San Mateo County, CA vs Union County, NJ
Property Tax Rate Comparison 2025
Quick Answer
San Mateo County, CA: 0.61% effective rate · $3,397/yr median tax · median home $556,910
Union County, NJ: 2.36% effective rate · $6,758/yr median tax · median home $286,395
Side-by-Side Comparison
| Metric | San Mateo County, CA | Union County, NJ | National Avg |
|---|---|---|---|
| Effective Tax Rate | 0.61% | 2.36% | 1.06% |
| Median Annual Tax | $3,397 | $6,758 | $2,778 |
| Median Home Value | $556,910 | $286,395 | $268,728 |
| Population | 764,442 | 575,345 | — |
San Mateo County, CA
- Effective Rate
- 0.61%
- Median Annual Tax
- $3,397
- Median Home Value
- $556,910
- Population
- 764,442
Union County, NJ
- Effective Rate
- 2.36%
- Median Annual Tax
- $6,758
- Median Home Value
- $286,395
- Population
- 575,345
Frequently Asked Questions
What is the property tax difference between San Mateo County and Union County?
San Mateo County, CA has an effective property tax rate of 0.61% with a median annual tax of $3,397. Union County, NJ has a rate of 2.36% with a median annual tax of $6,758. The difference is 1.75 percentage points.
Which county has higher property taxes, San Mateo County or Union County?
Union County, NJ has the higher effective property tax rate at 2.36% compared to 0.61%.
How do San Mateo County and Union County compare to the national average?
The national average effective property tax rate is 1.06%. San Mateo County is below average at 0.61%, and Union County is above average at 2.36%.