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Sources: USDA NASS, Census of Agriculture, SSURGO & CDL · Statistics Canada Census of Agriculture and farm-land values, with Farm Credit Canada's annual change · Eurostat agricultural land prices and renting prices, the German Federal Statistical Office, the French agriculture ministry's barème and the Belgian notaries · ABS boundaries with Bendigo Bank Agribusiness farmland values · INCRA's Atlas do Mercado de Terras on IBGE boundaries for Brazil, and IDECOR's rural land value grid for Córdoba. Property lines come from state, provincial and national cadastres.
Furrow loads one state or country at a time, so only the data you asked for is fetched and drawn. Mexico isn't mapped yet. Switzerland, Cyprus, Iceland and the western Balkans publish neither a land price nor a rent; Belgium and Norway publish one but not the other, and Furrow shows whichever exists. Argentina publishes no free national farmland price series at all — Córdoba's provincial map is the one open series in the country, and the other 23 provinces are left blank rather than filled from a paid table.
No sale records, not an appraisal — every figure is an automated estimate built from published government data, and modeled surfaces are always labelled as modeled. Switch regions any time from the top bar.
Furrow is a farmland value map and per-acre estimator for the contiguous US. Type a place on the entry screen and it loads the right state and flies there; otherwise it opens on a state picker — the 48 states shaded by what Furrow actually holds in each, before any estimate is made. Click one and only that state loads: its counties are shaded by their USDA farmland benchmark (all 3,108 counties are covered nationally, one state at a time), and the same view resolves down to live parcel boundaries as you zoom in. The gold button in the top bar loads a different state, and searching an address in another state loads that one for you. Furrow holds no deed or sale records anywhere — every estimate is a USDA county benchmark adjusted for the parcel's soil, cross-checked against capitalised cash rent. It is not a comparable-sales analysis, and no figure here is drawn from a transaction. Every number on the map traces back to a named public source, and nothing modelled is ever priced: where no measurement covers a parcel, the county benchmark is shown as it stands, with a wider band, rather than adjusted by a surface nobody surveyed.
| USDA NASS | 2025 survey state cropland, pasture and rent levels, plus county cash rents for ~2,860 counties — the primary county anchor for every estimate. NASS publishes irrigated and non-irrigated cropland rent as separate series and Furrow keeps them apart: which one applies to a parcel is decided by the crop actually growing on it. | 2025 survey |
| USDA Census of Ag | County-level market value of ag land & buildings for 3,063 of 3,108 counties — the second, independent county anchor, trended to 2025 state levels. | 2022 census |
| USDA SSURGO | Live Soil Data Access query per selected parcel — real soil series with true area weights, drainage class, prime-farmland share, slope and NCCPI productivity. A second query returns the county's average NCCPI across every rated acre, so the parcel's soil is compared against a measured county figure rather than a modelled one. | live query |
| USDA SSURGO · whole view | With the Land value or Soil layer on at field zoom, Furrow also pulls every SSURGO map-unit polygon intersecting the view — clipped and simplified server-side — with the NCCPI, flood frequency and drainage class of each, and samples them on a lattice inside every parcel boundary on screen. That is what makes the parcel colours a measurement: before it existed they came from a modelled surface, and a modelled surface is not allowed to colour a value map. Parcels the survey cannot answer for are left uncoloured, and the legend says how many of the two figures it is. | live query |
| USDA CDL | Cropland Data Layer raster (the crop-history map layer, any year 2008–2025). For a selected parcel Furrow runs a pixel histogram over the real boundary for every year 2008–2025, so the crop mix is area-weighted across the whole field — not read off a single point — and the same measurement over the surrounding 12 km gives the district baseline the parcel is priced against. | 2008–2025 |
| ERA5-Land | Annual precipitation, growing degree days (base 50 °F, capped 86 °F) and days at or below freezing, as a ten-year mean at the parcel centroid — a climate normal, not one season's weather. | 10-yr mean |
| Census TIGER | Road frontage — public road running within ~115 ft of the boundary, split interstate / other, measured from the Census Bureau's TIGER road network. | live query |
| State GIS parcels | Live statewide parcel boundaries streamed from state GIS in 28 states — including the California parcel fabric, Florida's FDOR 2025 cadastre and MassGIS (North Carolina includes assessed values; Maine covers organized towns, Idaho participating counties, Minnesota open-data counties). In 19 states without a statewide feed, Furrow streams individual county / appraisal-district GIS services — 193 counties so far, 137 of them in Texas. More join as services come online. | live · 28 states + 193 co. |
| Sale records | None. Furrow licenses no deed, MLS or Declaration-of-Value data in any state, and shows no comparable sales. Estimates additionally disclose when a state does not publish sale prices at all (non-disclosure states). | not held |
| Flood & wet ground | SSURGO flood-frequency class, measured over the boundary. A modeled screening surface exists for the optional flood and wet-ground map overlays, and it is a deterministic spatial model — not a survey, not a flood determination, and never priced into an estimate. Furrow does not query FEMA NFHL or the USFWS Wetlands Inventory. | SSURGO / modeled overlay |
| Cropped share | Measured from the CDL histogram over the real boundary — the cropped share of the whole polygon, which is what the county cropland benchmark is a price for. USDA Common Land Unit data would be better and is not public. Adjustable in the what-if panel. | USDA CDL |
| Cash rent map | The Cash rent layer shades every county by its published NASS non-irrigated cropland cash rent — the income series, drawn on its own colour scale so it can never be misread as a price. The implied yield shown with it is that rent over the same county's benchmark value. | 2025 survey |
| Relief & slope | Esri World Hillshade — shaded relief rendered from the USGS/SRTM elevation model, drawn as a raster over the imagery. A picture of the terrain, not a measurement: Furrow reads no slope percentage off it and no estimate uses it. | raster only |
| Your measurements | The measure tools compute area and distance from the points you place, on the WGS-84 ellipsoid. They are your geometry, not a survey and not a boundary of record. | your input |
| Imagery & places | Esri World Imagery basemap · Geocodio geocoding (US & Canada), OpenStreetMap / Nominatim elsewhere. | live |
One method, everywhere (the anchor method). The county benchmark is built from two real USDA series — the county's current NASS cash rent relative to its state (weighted 65%) and its Census-of-Agriculture land value relative to its state (35%) — applied to the 2025 NASS state cropland value. Rent is compared like with like: a county's irrigated rent against the state's irrigated mean, its non-irrigated rent against the non-irrigated mean, weighted by how the county actually farms.
Nothing modelled is priced. This is the rule the rest of the method hangs off. A live cadastre publishes geometry and nothing else, so until USDA has been asked about a particular boundary Furrow does not know its soil, what is planted on it or whether it floods. Furrow does hold a modelled surface for those — it is what colours a parcel before the survey answers — and every physical adjustment is gated on the measurement, not on the model. An unmeasured parcel is therefore shown at its county benchmark exactly, with a wider band and low confidence, and the card says so in as many words. It used to multiply that benchmark by as much as ±40% off the back of a smooth deterministic surface, which looked like precision and was not.
What the parcel adds. Selecting a parcel replaces modelled inputs with measured ones and re-runs the estimate on five of them:
The band. Half-width is the uncertainty that survives measurement, not a running total of every concern. Disagreement between the benchmark and the income line still widens it, but the contribution is bounded; a parcel with measured soil and a measured crop mix is held to ±12% (±16% in a non-disclosure state), and one with neither runs out to ±26–30%, because the honest thing to say about a parcel nobody has looked at is that it could be anywhere in its county's own distribution of ground. The band never closes below ±7% however much is measured: there is no parcel-level sale evidence anywhere in this product, the county benchmark is itself a survey estimate, and tile, field shape, access and buildings move real sales by more than that on their own. The headline is the point estimate; the range sits under it.
Because every estimate is benchmark-anchored rather than transaction-based, confidence is capped at medium everywhere and low in non-disclosure states. Nothing in Furrow reads "high confidence" — the map never overstates certainty. Furrow does not license deed or sale records, so it cannot and does not reproduce a comparable-sales valuation; where a service does license those records, expect its figure to differ.
| Live parcels | Statewide parcel boundaries stream from the state's own GIS — click any field for its real outline and estimate. | AR CA CT DE FL IA ID IN MA MD ME MN MS MT NC ND NH NJ NV NY OH PA UT VA VT WA WI WV |
| Tier 1 | Fully calibrated state soil index and county benchmarks. | T1 |
| Tier 2 | Strong county anchors on the national soil index. | T2 |
| Tier 3 | County benchmark estimates; parcel lines via draw-a-field. | T3 |
Furrow ships as a single file with no build step. If a figure here looks stale, hard-reload the page — your browser may be holding an older copy. The version above is the one you are looking at; quote it in any correction you send.
Furrow is a free farmland value map. It reads what governments already publish — national statistics, soil surveys, crop rasters and official cadastres — and shows what those sources say about a piece of ground, anywhere they cover. Every figure is an automated estimate built from that public data. Furrow holds no deed records, no sale prices and no listings anywhere in the world, so nothing here is a comparable-sales valuation and nothing here is an appraisal. The Methodology & sources panel names the publisher and the vintage behind every number on the map, and where no measurement covers a parcel the map says so rather than filling the gap.
Furrow is an independent project, published under the name Furrow. It is not a bank, broker, lender, appraiser, land agent, insurer or government body, and it is not affiliated with, endorsed by or acting for the USDA, Statistics Canada, Eurostat, the German Federal Statistical Office, the French agriculture ministry, the ABS, LINZ, INCRA, IBGE, IDECOR or any other agency whose data it maps. It is free to use, carries no advertising, sells nothing and has no accounts.
Questions, corrections, or anything a landowner believes is wrong: —. A correction sent from a parcel card carries that parcel's id, coordinates and the estimate shown, so it can be checked against the source.
Furrow has no server of its own. This page is a static file: once it has loaded there is no account, no login, no cookie, no analytics script, no advertising tag and no third-party tracker anywhere in it, and nothing you type, click, measure or save is transmitted to Furrow. There is nowhere for it to go.
Kept in your browser, sent nowhere:
| Saved parcels | The boundary, area and figures for anything you star into My Land, so the list survives a reload. | furrow.saved.v1 |
| Units | Whether you asked for acres or hectares. | furrow.unit |
| Colour scale | Whether counties rank within the state or nationwide. | furrow.cvalScale |
| Last region | Which part of the world you last opened. | furrow.region.v1 |
All four live in this browser's local storage on this device. Export My Land to CSV or GeoJSON from the panel itself, delete parcels one at a time there, or clear site data for this address to remove everything at once.
Requests your browser makes, and who therefore sees them. Furrow talks to these services directly from your browser, so each one receives your IP address and the request itself. Furrow cannot see, log or store any of it, and each operator has its own privacy policy:
| Map imagery | Esri World Imagery and Carto basemaps — the tiles under the map, which say roughly where you are looking. | basemap |
| Government data | Around 250 statistical and cadastral endpoints run by national, state and provincial agencies, all named under Sources. Each receives the map box or the point you asked about. | feeds |
| Address search | Two services split this, by what you are looking for. Geocodio handles searches and parcel addresses in the United States and Canada; OpenStreetMap Nominatim handles everywhere else, and anything naming a country outside North America. A search either service cannot answer is offered to the other, so both may see it. Whichever answers receives the text you type, or — when a card shows a street address for a parcel — the coordinates of that parcel. Both are asked for several candidates rather than one, and the choice between them is made in your browser. | geocoding |
| Soil & climate | ISRIC SoilGrids (soil map tiles outside the US) and Open-Meteo (ten-year rainfall and growing-degree-day averages for a selected parcel). | measurements |
| Web fonts | Google Fonts serves the three typefaces and receives your IP when the page loads. The page is fully usable with fonts blocked, and self-hosting them is a one-file change described in the README. | fonts |
Your location is read only after you press My location and your browser asks your permission. The coordinates stay in the page; the one exception is that turning a point into a street address means sending those coordinates to the geocoder above.
The email buttons on a parcel card open a draft in your own mail client, pre-filled. Nothing is sent by this page — you send it, and from then on the message sits in your mail provider's system and in the Furrow support mailbox, which is a Gmail account.
Feed failures are recorded inside the page only, readable at the foot of the Sources panel, and are gone when you close the tab.
Web-server logs. Whoever hosts this file keeps ordinary access logs — IP address, time, file requested — as every web host does. Furrow adds nothing to them and does not read them for analytics or profiling.
Your rights. Because none of the above reaches Furrow, there is no Furrow-held personal data to access, correct, port or erase — everything the app keeps is on your own device and under your control. If you are in the EU, the UK or a state with its own privacy statute and want to ask anyway, or you believe something here is inaccurate, write to the address above. Furrow is not directed at children.