[Evangelical]

If we want a logical and rational approach to this, we only need to count the number of times it refers to city, house or region as church or churches. The most likely answer will be the one that has the majority.

Here is the rational and logical evidence I get from doing word searches on Biblehub.com of the phrases "church in", "churches in", "church of", and "churches of". Then I count them whether they refer to a city, house or region.

Number of times the phrase "church in" refers to a city: 12
Number of times the phrase "church in" refers to a house: 3
Number of times the phrase "churches in" refers to a city: 0
Number of times the phrase "churches in" refers to a region: 9

Number of times the phrase "church of" refers to a city: 7
Number of times the phrase "church of" refers to a house: 0
Number of times the phrase "churches of" refers to a city: 0
Number of times the phrase "churches of" refers to a region: 5

Then we just add them:

Number of times the phrase "church of" or "church in" refers to a city: 19
Number of times the phrase "church of" or "church in" refers to a house: 3
Number of times the phrase "churches of" or "churches in" refers to a city: 0
Number of times the phrase "churches of" or "churches in" refers to a region: 14

So 19 out of 22 times, church refers to a city, or 86% (rounded).
3 times out of 22, church refers to a house, or 14% (rounded).

0 out of 14 times, churches refers to a city, or 0%.
14 out of 14 times, churches refers to a region, or 100%.

This shows that a church is much more likely to be a city than a house (86% compared to 14%). This evidence is against those churches (baptist, house churches etc) which claim a church size smaller than a city. The plural "churches" is never used in relation to a city, only regions.

It also shows that a church is never bigger than a city (100% to 0%). This rules out most denominations, which claim a size greater than a city.