New Castle County, DE vs San Mateo County, CA
Property Tax Rate Comparison 2025
Quick Answer
New Castle County, DE: 0.53% effective rate · $2,098/yr median tax · median home $395,882
San Mateo County, CA: 0.61% effective rate · $3,397/yr median tax · median home $556,910
Side-by-Side Comparison
| Metric | New Castle County, DE | San Mateo County, CA | National Avg |
|---|---|---|---|
| Effective Tax Rate | 0.53% | 0.61% | 1.06% |
| Median Annual Tax | $2,098 | $3,397 | $2,778 |
| Median Home Value | $395,882 | $556,910 | $268,728 |
| Population | 570,719 | 764,442 | — |
New Castle County, DE
- Effective Rate
- 0.53%
- Median Annual Tax
- $2,098
- Median Home Value
- $395,882
- Population
- 570,719
San Mateo County, CA
- Effective Rate
- 0.61%
- Median Annual Tax
- $3,397
- Median Home Value
- $556,910
- Population
- 764,442
Frequently Asked Questions
What is the property tax difference between New Castle County and San Mateo County?
New Castle County, DE has an effective property tax rate of 0.53% with a median annual tax of $2,098. San Mateo County, CA has a rate of 0.61% with a median annual tax of $3,397. The difference is 0.08 percentage points.
Which county has higher property taxes, New Castle County or San Mateo County?
San Mateo County, CA has the higher effective property tax rate at 0.61% compared to 0.53%.
How do New Castle County and San Mateo County compare to the national average?
The national average effective property tax rate is 1.06%. New Castle County is below average at 0.53%, and San Mateo County is below average at 0.61%.