regional boundaries
Lines between zones
Regional boundaries are the lines or limits that separate geographic areas from one another—whether political divisions like states and counties, or informal zones defined by culture, dialect, or climate.
The term appears in discussions of governance, planning, and identity: The new policy respects existing regional boundaries.
Boundaries may be sharply drawn on maps but blurry in practice, as communities and ecosystems rarely align with administrative lines.
- mountain rangeSeries of connected peaks
- city limitMunicipal boundary marker
- state linePolitical territory's edge
- county lineBorder between adjacent counties
- coastlineLand-water boundary
ethnic enclave · cultural divide · no man's land · buffer zone · trade route · river · strait · demilitarized zone · territorial waters · forest edge · watershed · industrial corridor · desert · plateau · canyon · customs checkpoint · economic bloc · electoral district
- French cartographyriver maps, city plans, road networks, provinces, Normandy
- Persian geographyPersian Gulf, Caspian Sea, Tehran, Isfahan, Shiraz
- Texas mapscounty maps, highway map, road atlas, Texas border, state borders
- Nordeste Mapspolitical map
- wine lawsappellation, AOC, DOCG, labeling laws, grand cru
- CzechoslovakiaPrague, Bratislava, Bohemia, Slovakia, Moravia
regional boundariesworld without borders
international waters · national boundaries · international borders
regional boundariesnatural features
Earth's unbuilt landscape elements
natural barriers · mountain ranges · watersheds · geographic barriers · geographic features
regional, region, regions, regionally, regionalism, regionalist, boundaries, boundary, bound