How Many Chickens Do You Need (and How Many Are You Allowed)?

The egg arithmetic, the flock minimum, the space each bird needs, and how to find your city's limit.

The egg arithmetic

A healthy young hen lays four to six eggs a week in season. So a household of four wanting a dozen a week needs three to four hens. Output falls in winter and falls again as hens age, so most keepers run one bird more than the arithmetic says.

• Couple, light use: 2 to 3 hens
• Household of four: 3 to 4 hens
• Household of six, or keen bakers: 5 to 6 hens
• Selling a few dozen at the gate: 8 to 12 hens, and check your state's egg sale rules first, because most states exempt small direct sales but the threshold varies

Never fewer than three

Chickens are intensely social flock animals. A lone chicken is a stressed chicken, and a pair leaves a lonely survivor when one dies. Three is the welfare minimum and it keeps the pecking order stable.

How many are you allowed?

There is no national rule. Limits are set by city or county ordinance and they vary widely, so the honest answer is that you have to look yours up. The patterns are consistent enough to know what you are looking for:

• A hen cap. Cities that permit backyard poultry commonly allow a small number without a permit and require one above that.
• No roosters. Roosters are prohibited in most residential zones, and you do not need one for eggs.
• Setbacks. Expect a minimum distance from property lines, and a larger one from a neighbor's house.
• Lot size. Some ordinances scale the number of birds to the size of the lot.

Search your city or county name with "chicken ordinance" or "keeping poultry" and read the municipal code itself rather than a summary, because the summaries go stale.

Check your homeowners association before anything else. An association can prohibit chickens on a lot where the city allows them, and a city permit does not override it. This stops more American keepers than any city ordinance does.

Space per bird

Plan on three to four square feet per bird inside the coop and eight to ten square feet each in the run. Give more if they rarely range outside it. Crowding is the root of pecking, parasites and the smell that makes a neighbor pick up the phone, and it is far cheaper to build the bigger coop once than to fix a crowded flock later.

Bantams need less, large dual purpose breeds need more, and a flock kept in through a hard winter needs the upper end of both figures.

Starting a flock? Pick a breed with the breed picker, check the numbers in the feed guide, and track every hen and every egg in the free app.