BirdAnalyst
Species · Iowa · BBS 2025 Release · 1966–2024

House Finch Population Trend in Iowa

All statesGeneralists

House Finch in Iowa has surged: up 265% on the route-weighted index since 1993.

+265%Since 1993
37Routes In State
33Years

Notable House Finch Trends in Iowa

long arc increasecomputed index

House Finch has surged in Iowa: up 265% on the route-weighted index since 1993.

House Finch Population Forecast in Iowa

If the recent trend holds, House Finch in Iowa is projected to fall about 19% by 2029 — from 3.3 in 2024 to a central estimate of 2.7 (95% range 0.71–4.6). A 5-year backtest shows a typical error of ±28.1%, with 100% of held-out values landing inside the 95% band.

-19%Change by 2029
2.7Projected 2029 index
0.71–4.695% range
±28.1%Backtest error
19912029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20252.60.614.5
20262.60.634.5
20272.60.664.5
20282.60.684.6
20292.70.714.6

House Finch Survey Routes in Iowa

Routes recording House Finch in Iowa.
Brooklyn2920182007
Sioux City2220241993
Red Rock2020241992
Melrose620242002
Burchinal620232012
Hudson620211992
Maquoketa520231993
Prairieburg520241992
Bryant420241991
Cedar Valley419971995
Garner419931991
Washington320241992
Rock Valley320191993
Mt Hamill220241995
Panther220241992
Neola220151992
Wales220161993
Alice219951991
Clare220191996
Washta220141994
Festina220242005
Davis Corner220192005
Titonka220041996
Mccallsburg220241996
Exline120151995

House Finch Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.