vicinity

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The state of being near in space or relationship; proximity.
• noun A nearby, surrounding, or adjoining region; a neighborhood.
• noun An approximate degree or amount.

from The Century Dictionary.

• noun In geometric topics, a place, A, is said to be in the vicinity of a place, B, within a place, C, which contains both A and B, and in a given respect, if, and only if, an object instantaneously filling A can by an ordinary motion move to B without ever leaving C, and without at any instant during its motion occupying any place which differs from A in the given respect.
• noun The quality of being near; nearness in place; propinquity; proximity.
• noun Neighborhood; surrounding or adjoining space, district, or country.
• noun Nearness in intercourse; close relationship.
• noun Synonyms Proximity, etc. See neighborhood.

from the GNU version of the Collaborative International Dictionary of English.

• noun The quality or state of being near, or not remote; nearness; propinquity; proximity.
• noun That which is near, or not remote; that which is adjacent to anything; adjoining space or country; neighborhood.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun proximity, or the state of being near
• noun neighbourhood, or the nearby region
• noun approximate size or amount

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a surrounding or nearby region