{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/property-tax/03801/","name":"Property tax for ZIP 03801 — Portsmouth (NH), NH","description":"Property tax data for ZIP 03801 (Portsmouth (NH), New Hampshire), sourced from County assessors.","topic":{"slug":"property-tax","label":"Property tax","source":"County assessors","sourceUrl":"https://zipradar.org/methodology/","refreshCadence":"Annual reassessment per county","summary":"Pages show the county millage rate, assessment methodology, homestead and senior exemptions, and a link to the assessor's portal for address-specific searches.","limitations":"Top-50 metros covered at launch (~35% of US population). Smaller counties deep-link to the assessor portal with a pending-ingestion flag pending federation."},"place":{"zip":"03801","city":"Portsmouth (NH)","state":"NH","stateFull":"New Hampshire","county":"Rockingham County (NH)","countySlug":"rockingham-county","geo":{"latitude":43.0772,"longitude":-70.7626}},"stateContext":{"topConcern":"Radon, lead in older housing","narrative":"New Hampshire is uniformly Zone 1 radon. Older Manchester + Nashua + Portsmouth housing stock carries lead-service-line risk. Coastal flood zones limited to small NH coastline."},"radonZone":null,"airQuality":null,"datePublished":"2026-04-24","dateModified":"2026-09-07","canonicalUrl":"https://zipradar.org/topic/property-tax/03801/","zipDashboardUrl":"https://zipradar.org/zip/03801/","zipDashboardApiUrl":"https://zipradar.org/api/zip/03801/","primarySourceUrl":"https://zipradar.org/methodology/","license":{"content":"CC-BY-4.0","attribution":"zipradar.org — https://zipradar.org/topic/property-tax/03801/"}}