noun
everywhere; all over the place
Colloquial, emphatic expression meaning 'all around here/there' or 'everywhere in the vicinity'. Often implies a scattered or messy distribution.
See also: そこら中
部屋の中がそこいら中散らかっている。
The room is a mess everywhere.
公園にはそこいら中にゴミが落ちていた。
There was trash all over the park.
Almost synonymous; そこいら中 is slightly more emphatic or colloquial, while そこら中 is more common and neutral.
Compound of そこいら (thereabouts, around there) + 中 (じゅう, throughout). The exact derivation of そこいら is uncertain; it may be a colloquial extension of そこ (there).