Fresno County Bee Statistics: Agriculture, Defensive Bees, and Real Sting Risk

Last reviewed 2026-07-25. Journalists, researchers, and community groups are welcome to cite any figure on this page with attribution and a link.

Fresno County is the number one agricultural county in the United States, and its largest crop cannot set a nut without honey bees. That single fact shapes almost everything about bees here, including how many there are and why taking them out alive is the sensible answer. Below are the verified numbers, each attributed inside the sentence that uses it.

We maintain this page as a public reference and keep it current. Reporters, students, and other operators are welcome to cite it, and every primary source is linked in full at the bottom.

Why there are this many bees in Fresno County

The Fresno County 2024 Crop and Livestock Report puts the county's total agricultural value at $9,029,122,000, a record, and identifies Fresno as the number one agricultural county in the United States. The county's leading commodity is almonds: 308,170 harvested acres worth approximately $1.46 billion, which the report puts at 16.15% of total agricultural value.

Almonds cannot set a crop without insect pollination, and the scale of that dependence is national rather than local. USDA NASS counts 1.39 million bearing almond acres in California. To pollinate them, roughly 2.7 million honey bee colonies were brought in for the 2024 almond bloom, which farmdoc, working from NASS data, puts at about 99% of all honey bee colonies in the United States. The USDA Economic Research Service describes almonds as "the largest pollination service market for honey bees."

That concentration is seasonal and extreme. For a few weeks each year, most of the country's managed honey bee colonies sit in California almond orchards before being trucked to the next crop. Fresno County, with 308,170 harvested almond acres, is one of the places they go. It is the reason a bee question here is an agricultural question and not only a pest question, and the reason UC IPM treats live removal and relocation as the preferred approach rather than as an upgrade.

What pollination is worth in one county, in one year

The same Fresno County report values apiary products at $180,878,000 in total. The line for pollination services to trees, fruit and nut crops is $112,785,000. That is what growers in a single California county paid for bee work in a single year, and it is the clearest dollar answer to why beekeeping infrastructure is dense here.

One note on what is not on this page. The 2024 crop report also carries a honey production line, and we have deliberately left it out: its pounds and its price per pound cannot be reconciled with USDA NASS figures for California honey, so one of the two is wrong and there is no public way to tell which. The apiary total and the pollination-services line are internally consistent, so those are the two figures we use and cite.

Defensive honey bees: what is documented and what is not

Africanized honey bees are usually discussed badly. UC ANR Publication 8068, hosted by CDFA, states that AHB entered southern California in 1994 and are now established throughout southern California and in the southern end of the San Joaquin Valley. There is no published Fresno County first-detection date and no published Fresno County percentage, so we do not print either one. The San Joaquin Valley statement is the accurate description of where things stand.

Two corrections matter more than anything else on this page. First, Africanized bees cannot be identified by looking at them. CDFA requires laboratory analysis and reports the result as a probability between 0.00 and 1.00, so anyone identifying them by eye in your yard is guessing. Second, their venom is not stronger. The hazard is behavioral: how many bees respond, and how long they stay agitated afterward. UC Davis's California Master Beekeeper Program uses the term defensive honey bees for exactly this reason, and Eric Mussen's summary is the one worth keeping: "Africanized honey bees are not something to be feared, but they are to be respected."

The documented behavior, side by side

UC IPM states that "swarming is the honey bee's method of colony reproduction," which is why swarm season and bloom season line up. The difference between a defensive colony and an ordinary one is measurable, and it gets measured in distances and hours rather than in venom potency.

Read the table as a set of operating rules rather than as a threat. Fifty feet is the reason to move the picnic, not the reason to panic. One hundred feet is the reason to shut off the mower and the blower before approaching a building with a colony in it. A quarter mile or more is the reason the standard instruction is to keep going and get indoors rather than stop and swat. And 8 or more hours is the reason a disturbed colony is not something to go check on again after lunch.

These figures describe colony behavior, not venom strength. Africanized honey bee venom is not more potent than European honey bee venom. The documented difference is the number of bees that respond and how long the response lasts.

What the sting risk actually is

UC IPM Pest Note 7449 supplies the numbers people rarely hear. One to two people out of every 1,000 are allergic to bee stings. For everyone else the reference toxic threshold is 8.6 stings per pound of body weight, which works out to a healthy adult needing 1,000 or more stings before venom alone becomes a serious threat.

The fatality figure that circulates is real but routinely misused. Across the entire United States, and counting hornets, wasps and bees combined rather than bees alone, the CDC's Morbidity and Mortality Weekly Report recorded 788 sting deaths from 2011 through 2021, an average of about 72 per year, 84% of them male. It is a national, all-stinging-insect number. There is no Fresno County or California equivalent published, and we will not invent one.

Taken together those figures point to the same practical advice a beekeeper would give you. Allergy status is the variable that matters most. Sheer numbers are second. The situation to avoid is one where a large colony gets provoked and you cannot put distance between yourself and it quickly.

Sources & Methodology

Every figure above was taken from the primary sources below (accessed 2026-07-25). Where a number is derived (arithmetic on published figures) or covers a broader period or area, the text says so.

1. Fresno County Agricultural Commissioner - Crop and Livestock Reports — 2024 total agricultural value, almond acreage and value, apiary and pollination-services lines
2. USDA National Agricultural Statistics Service - California — bearing almond acreage in California; California honey figures
3. farmdoc daily - University of Illinois — colonies used for the 2024 almond bloom as a share of US colonies
4. USDA Economic Research Service — almonds as the largest pollination service market for honey bees
5. UC ANR Publication 8068 - Africanized honey bees, hosted by CDFA — 1994 entry into southern California, San Joaquin Valley establishment, nest defense distances
6. California Department of Public Health — swarm size range, duration of agitation, relative stinging response
7. UC Statewide IPM Program - Pest Note 74159, Honey Bees — swarming as colony reproduction, swarm size, live removal, structural opening, honey in walls
8. UC Statewide IPM Program - Pest Note 7449, Bee and Wasp Stings — allergy prevalence, 8.6 stings per pound, the 1,000-sting threshold
9. CDC Morbidity and Mortality Weekly Report — 788 national deaths 2011 to 2021 from hornet, wasp and bee stings combined