What the loan is
A USDA guaranteed loan is an ordinary fixed-rate mortgage from an ordinary lender, with the federal Rural Development program standing behind it. That backing is what buys the borrower a down payment of nothing at all. There is a 1.00% guarantee fee upfront, normally financed into the loan, and a 0.35% annual fee charged monthly on the balance.
Household income has to sit at or under 115% of the area median for your household size. The dollar figure moves and the versions floating around online are a mix of years, so treat any number you find on a lender’s blog as unverified and have your own lender pull the current one.
The address decides it, and only the map decides it
This is the part worth being stubborn about. USDA eligibility is drawn on a map, and it is checked address by address at eligibility.sc.egov.usda.gov. It has nothing to do with what your mail says. A house with a Quakertown mailing address can sit in Richland Township or Milford Township. A Perkasie address can be East Rockhill or Hilltown. The boundary can run down the center line of a road.
Lender marketing pages list town names as eligible or not. Those lists are advertising, and several of the ones covering Bucks carry no date at all. Run the address, get the result in writing from your lender, and only then write the offer. This site names no town as eligible, because no honest one can.
Picked up day and night, calls recorded. No credit pull, no application.
An address is the only thing USDA cares about first, so give the street and a licensed Pennsylvania lender who runs USDA files calls you back and checks it properly. Ring before you offer.
The form takes about a minute and lands in the same place as the call.
The rule underneath the map
The statute behind it sets population tiers. A place of 2,500 or fewer is rural. Up to 10,000 can be rural if it is rural in character. Between 10,000 and 20,000 a place can qualify only if it sits outside a metropolitan statistical area, and there is a grandfather provision running to 2030 for certain places up to 35,000.
That middle tier is the one that governs Bucks, because the whole county sits inside the Philadelphia–Camden–Wilmington metropolitan statistical area. Population alone therefore never settles it here, which is exactly why the map exists and why the map is the answer.
Which corners of Bucks are worth asking about
The upper end of the county is where the question is even worth raising. The townships to put to a lender are Richland, Milford, Springfield, Haycock, Nockamixon, Tinicum, Bridgeton and Durham in the far north, along with East Rockhill, West Rockhill and Hilltown around Perkasie, and Solebury on the river side.
The small boroughs are worth asking about too. Quakertown had 9,359 residents at the 2020 census, Perkasie 9,120, New Hope 2,612, with Richlandtown, Trumbauersville, Silverdale and Dublin smaller again. All of those sit inside the population tiers, which is a reason to check and not a finding.
Down-county is a different story. The lower boroughs and the built-up townships along Route 1 and the Turnpike are not where this program spends its time. If you’re shopping in Bristol, Feasterville or Warminster, plan on a different loan and be pleasantly surprised if the map says otherwise.
What upper Bucks actually costs
Zero down does not mean zero money. Your customary half of the county’s 2% realty transfer tax is 1% of the price, due at recording, and no Bucks municipality charges more than the 2%. The owner’s title insurance premium is set statewide, $2,450 at a $350,000 price, plus $125 for the closing protection letter. Add the appraisal and the inspection.
For scale, the Quakertown market’s median sold price was $550,000 in July 2026 on 92 sales, at 23 days on market. Prices up here do not read as rural even where the map says otherwise, and the income ceiling tends to bind before anything else does.
One more upper-county wrinkle
Quakertown and Perkasie both run their own municipal electric utilities, and both have raised rates after the regional capacity auction — Perkasie’s council said increases may continue through 2027. That lands in the monthly budget beside the mortgage, and a lender working out what you can carry should hear about it. Ask the seller for twelve months of utility bills, the same way you would ask for the water report.