Northampton County Property Taxes, Explained
Northampton County sets tax rates against 1995 assessed values, so its millage looks steep: assessments sit at about 16.1% of market value and rates are scaled up to match. Read the raw millage without that context and you’ll overestimate the bill. Here’s what you’ll pay, why the rates look the way they do, and how the bill breaks down across every school district that taxes homes here.
County and municipal millage: 2026. School millage: 2025-26 adopted budgets (districts adopt the next year's budgets by June 30; we update when PDE certifies the statewide file in the fall). Common Level Ratio: STEB 2025 (16.1%). A new CLR takes effect each July 1, and we update then.
Looking for a home in Northampton County?
Search homes for sale in Northampton CountyWhy the millage looks so high
Northampton County still assesses homes on 1995 values. A house worth $450,000 today is assessed at about 16.1% of that, so the county and its school districts levy high millage on small assessments just to fund their budgets. Raw millage tells you almost nothing about what you will pay.
The effective rate fixes that: millage multiplied by the county's Common Level Ratio (16.1%), expressed as a percentage of a home's real market value. That is the figure NookLocal uses everywhere, so you can compare Northampton County to anywhere else.
- 1995
- Assessment base year
- 16.1%
- Common Level Ratio
- 10.8
- County millage
- 0.17%
- County levy, effective
Effective property-tax rate by school district
Typical total rate (county plus median municipality plus school) as a share of market value, and the annual bill on a $450,000 home. Cheapest first. Districts based in a neighboring county appear with their Northampton County rate. Rates vary by municipality within a district, so open a district for its full range.
| School district | School rate | Total rate | ~Tax / $450,000 |
|---|---|---|---|
| Northampton Area | 0.94% | 1.24% | $5,602 |
| Saucon Valley | 0.89% | 1.29% | $5,823 |
| Pen Argyl Area | 0.91% | 1.31% | $5,912 |
| Bangor Area | 0.92% | 1.32% | $5,936 |
| Nazareth Area | 0.97% | 1.33% | $5,966 |
| Wilson Area | 1.01% | 1.36% | $6,141 |
| Bethlehem AreaBased in Lehigh County; this is its Northampton County rate.Straddles Lehigh and Northampton counties (PDE lists it under Northampton). The matrix scores it on the Lehigh side; the Northampton-side school rate (63.17 mills) is in the tax dataset and drives Northampton-side listings and the Northampton tax page. Listing/price counts span both sides. | 1.02% | 1.41% | $6,366 |
| Catasauqua AreaBased in Lehigh County; this is its Northampton County rate. | 0.94% | 1.44% | $6,475 |
| Easton Area | 1.18% | 1.50% | $6,762 |
| Northern LehighBased in Lehigh County; this is its Northampton County rate. | 1.25% | 1.78% | $7,989 |
What a buyer should expect
Pennsylvania does not reassess a home just because it sells, so the millage and assessment usually carry over to you. The exception: buy well above a home’s implied market value and the school district can file an assessment appeal that raises your bill. For a specific home, the property tax calculator and every listing page do the exact math, including an appeal-risk check. The Common Level Ratio table explains the conversion, and the School District Value Matrix weighs these rates against school quality.
Common questions
Why do Northampton County property tax millage rates look so high?
The short answer is the assessment base year. Northampton County still assesses homes on 1995 values, so a home's assessed value is about 16.1% of what it's worth today. Districts and the county levy high millage on those small assessments to fund their budgets. The number that matters is the effective rate, which is millage multiplied by the county's Common Level Ratio (currently 16.1%), the share of a home's real market value you pay each year.
How are Northampton County property taxes calculated?
Your bill is the sum of three millage rates, county (10.8), your municipality, and your school district, applied to your home's assessed value. Because Northampton County assesses on 1995 values, NookLocal converts every rate to an effective percentage of market value using the 2025 Common Level Ratio (16.1%), so you can compare what you'll pay across towns and districts.
Will my property taxes change when I buy a home in Northampton County?
Pennsylvania does not reassess a property simply because it sells, so your millage and assessment usually carry over. But if you buy well above the home's implied market value, the school district can file an assessment appeal that raises your bill. Every NookLocal listing shows the recomputed tax at the current rate, plus an appeal-risk check.
Which Northampton County school district has the lowest property taxes?
Among the districts we cover that tax homes in Northampton County and operate public schools, Northampton Area carries the lowest typical total rate: about 1.24% of market value, roughly $5,602 per year on a $450,000 home. Northern Lehigh (based in Lehigh County; the figure is its Northampton County rate) is the highest, at about 1.78%, roughly $7,989 per year. Rates also vary by municipality within a district, and the table above lists each one.
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Tax data: Northampton County assessment office, adopted school budgets, and the Pennsylvania State Tax Equalization Board (Common Level Ratio). Effective rates assume an assessment at the current CLR, the right baseline for a purchase. Figures do not subtract homestead or farmstead exclusions, which lower the school portion for many owner-occupants; apply for those after you buy. Deemed reliable but not guaranteed; verify with the county and district before transacting.