What the loan is, and the two conditions on it
The USDA guaranteed loan, run by the Department of Agriculture’s rural development arm, lends 100% of the purchase price on a primary residence. No down payment. In exchange there’s a 1.00% guarantee fee added at closing, usually financed into the loan, and a 0.35% annual fee collected across the monthly payments.
For a first-time buyer in upper Bucks who has the income and the credit but no pile of savings, that combination is the whole appeal. It also has two conditions that decide everything: the household income has to be moderate, and the property has to sit in an area USDA has designated eligible.
USDA is a moderate-income program. Household income has to fall at or under 115% of the area median income for the county, counted across the whole household, including adults who aren’t on the loan.
The dollar figure attached to that percentage moves, and it moved in 2026. We found conflicting published numbers for the Philadelphia metro this year, which is exactly the sort of thing that shouldn’t be printed and then relied on at a closing table. The lender pulls the current limit for Bucks County and your household size in about a minute, so get it from there.
The map is the rule
USDA eligibility is geographic, and the only authority on it is USDA’s own property eligibility map at eligibility.sc.egov.usda.gov. You type in a street address and it tells you whether that parcel sits in an eligible area.
We could not verify the official map on this pass, which is worth saying plainly. Lender pages that list eligible towns in Bucks are not authoritative and never were: they’re summaries of a map, written at some past date, by someone selling loans.
So the check has two steps, in this order.
- Put the exact address into USDA’s eligibility map yourself, before you get attached to the house.
- Have the lender confirm it against the current designation before your offer goes in, because the lender’s confirmation is what the file is built on.
Picked up day and night, calls recorded. No credit pull, no application.
Have the upper Bucks address in front of you and a licensed Pennsylvania lender checks it against USDA's map and calls you back with a yes or a no. Call with the address before you make an offer.
The form takes about a minute and lands in the same place as the call.
Why a town name is the wrong unit
Eligibility boundaries are drawn around urbanized areas, not around municipal lines. Two houses on the same road, a few hundred feet apart, can fall on opposite sides of one. A borough can be small enough on paper and still be excluded because it sits against a developed area next door.
The population tiers in the underlying statute give a feel for the scale involved. Under 42 U.S.C. §1490, places of 2,500 or fewer qualify, places up to 10,000 can qualify if they are rural in character, and places between 10,000 and 20,000 can qualify when they sit outside a metropolitan area. Bucks County sits inside the Philadelphia metropolitan area, so that third tier is off the table here, and even the first two are only part of the test.
Maps also get redrawn. An address that qualified when a neighbor bought in 2019 is not automatically an address that qualifies today.
Where eligible ground tends to be in Bucks
In general terms, the eligible ground in this county is at its rural upper end, in the townships above the Doylestown area. The dense lower-county corridors along Route 1 and the river are a different kind of place entirely.
Worth keeping straight: USDA’s designation and Bucks County’s own assistance program are two different tests with two different boundaries. The county’s $10,000 is available anywhere in Bucks, and USDA’s map covers only part of it, so an address can pass one and fail the other.
That is deliberately a description of the county’s geography, not a promise about any town in it. Nobody should write an offer on the strength of a sentence like the one above, mine included.
What else the loan asks
USDA loans are for a primary residence, so a weekend place or a rental is out. The property is appraised like any other, and where a house up-county is on a private well or a septic system, the lender will say what testing it requires.
Nothing down is not the same as nothing due at the table. Your half of the 2% Bucks transfer tax, the title work, the appraisal and the first year of insurance and taxes all still show up, and a seller credit is the usual way buyers cover part of that. If you’re a veteran, a VA loan also asks nothing down and has no map to satisfy anywhere in the county, which makes it the first question to settle before the USDA one.
One local wrinkle worth knowing: Bucks County’s own first-time buyer program requires the first mortgage to be fixed-rate for at least fifteen years, and names USDA’s 502 Direct loan as its single exception. That tells you the county has seen the pairing before, and that the specifics get decided file by file.