Supermarket catchments

Type an address, suburb or postcode, or click the map. Shows the supermarkets within reach and which owner group each belongs to.

Count independent supermarkets as competitors (each as equal to a big store — a lower bound on concentration) Use straight-line circles instead of drive-times

Woolworths NZ Foodstuffs Costco Independent

Stores: OpenStreetMap, 2026-09-20. Spot-checked against the chains' own store finders, not fully reconciled: a few stores may be missing, closed or double-counted.
Owner groups: Woolworths NZ = Woolworths, plus FreshChoice and SuperValue (locally owned franchises supplied by Woolworths). Foodstuffs = New World, PAK'nSAVE, Four Square (owner-operated co-operative members). Some SuperValue stores have since rebranded to FreshChoice.
Concentration (HHI) is by number of stores, not sales. 10,000 = one owner; 5,000 = two equal owners.
Drive-times: our own free-flow estimates on the OpenStreetMap road network, calibrated to openrouteservice; no congestion. Measured from a central point of the nearest Stats NZ neighbourhood (SA1, roughly 100-200 people), not from your door. In rural areas that point can be several km from your address and the times are rougher.
Your search text is sent to OpenStreetMap's Nominatim geocoder; clicking the map sends nothing to the geocoder.