Answered for Danville, Hendricks County (county seat) County.
NWS Indianapolis records 32 Hendricks County tornadoes from 1950 to 2025, and none of them lists Danville as the location — the county's tornado damage has clustered east toward Brownsburg and Avon. The costliest and most recent came on 2 April 2025: an EF2 near Brownsburg Airport with $1.2 million in damage and one injury, plus an EF1 at Brownsburg at $200,000. Before that, four tornadoes touched down in a single afternoon on 15 August 2016 (Clayton, Brownsburg twice, and Avon), and an EF1 hit Six Points on 24 June 2014 with $1.0 million in damage. The town's ordinary risk is straight-line wind, including the 29 June 2012 derecho. Black Walnut holds up better than most under it. Removing a black walnut around Danville runs roughly $400–$1,900, and in Danville Main Street Historic District and Danville Courthouse Square Historic District access is usually what decides where in that range you land.
The Main Street Historic District developed circa 1844–1920 across just 9 acres and 37 contributing buildings, and the Courthouse Square district circa 1865–1960 over 70 acres — those blocks hold the town's oldest and largest trees on narrow lots with sidewalks on both sides. Danville does actively manage its right-of-way canopy through a standing Tree Advisory Committee, though the specific inventory and replanting-ratio requirements attributed to Chapter 97 could not be verified.
Middle-aged and trending newer: Census ACS figures reproduced in regional planning data show 66.7 percent of Danville's units predate 2000, 24.4 percent were built between 2000 and 2013, and 8.9 percent in 2014 or later, with the town's 2021 comprehensive plan counting over 4,100 housing units and more than 500 added since 2010. The result is a genuinely old core around the courthouse square with 1840s–1920s houses and century-old street trees, ringed by subdivisions whose trees are 10 to 25 years old.
Deep taproot, which is why walnut sits tight in wind and why nursery stock is difficult to move, and why the roots causing problems are generally under the tree rather than out in the drive. The real root issue here is chemical rather than mechanical: juglone concentrates in the roots and lingers in the soil, so a bed that failed under a walnut often keeps failing for a season or more after the tree is gone.
No permit is required to remove a tree on private property in Danville. Beyond that, the town's Chapter 97 tree code could not be verified from a retrievable source: what danvillein.gov does confirm is that a three-member Tree Advisory Committee exists to encourage the planting, care and preservation of trees in the public right-of-way. Chapter 97 is reported to require written permission from that committee and the Staff Project Coordinator before removing, or trimming more than one-fifth of, any right-of-way tree, on a free 30-day permit — confirm that requirement with Town Hall before any work in the tree lawn.
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Distance measured from Danville.