District, Area, Zone
noun, の adjective
The earth district isn't our solar system or something like that. We're talking about a specific portion of earth, and naming it as a district. So, what is this patch of earth? It's a district, area, or zone.
ちく
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
この地区はファミリー向けで住みやすいです。
This district is family oriented and easy to live in.
彼は、去年の大会で地区の代表に選ばれた選手です。
He is the player who was chosen as the representative of the district in last year's tournament.
その地区の住民は、みんな地区の行事に協力的です。
The residents of that district are all cooperative when it comes to district events.