Hackettstown, Warren County — property tax & assessments
3,018 parcels in MOD-IV 2026 file. Rate shown is tax year 2025 (latest available — not yet matched to assessment year).
Assessments are tax year 2026; latest published general rate we have is 2025. Estimate uses that rate until the 2026 rate is loaded.
2025 general tax rate: 3.477
Dollars per $100 of assessed value. Example on $300,000 net: $10,431/yr estimated. Assessment file year: 2026.
Prior year (2024) general rate: 3.419.