There is usually land area outside of city boundaries that is under County Ordinances rather than City Ordinances.
These are likely to be less stringent, but do typically align to how much land one has. If you look at a map that shows county and city lines, it can help. However, even in the County, there may be large lot properties that are covered by an HOA that will be less lenient than County Ordinances. This happened to a neighbor who was on a two acre parcel inside an HOA development. My home was not in an HOA, not under the City, and I had enough land to be zoned agricultural.
Get familiar with the County Ordinances first, then do home searches.