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How accurate is OnX hunting app with property lines

Posted on 1/14/26 at 6:03 am
Posted by GravelLotinCanada
Anywhere, Anytime
Member since Dec 2019
364 posts
Posted on 1/14/26 at 6:03 am
I have been using it and the few times I was on public and got even close to private it seemed pretty accurate to me so far. Until yesterday. I was on a wma and it looked to have a decent amount of land I could keep walking according to the app but all of a sudden it said posted and had a box stand on what OnX was showing as public land still.

I turned around bc not worth it but I figured the app mapping would be more accurate than that.
Posted by KB375
N of I10
Member since Jan 2011
188 posts
Posted on 1/14/26 at 6:17 am to
I’ve noticed it to be off 20-50’ especially on north and south boundaries in S AL. You can usually look at the aerials and notice the change in timber stands do not match the lines shown.
Posted by 257WBY
Member since Feb 2014
7300 posts
Posted on 1/14/26 at 6:29 am to
The app is getting data from the parish/county. OnX is a great guideline, but I wouldn’t try to use it in court.
Posted by Antib551
Houma, LA
Member since Dec 2018
1379 posts
Posted on 1/14/26 at 6:44 am to
Land Surveyor here, as mentioned OnX is only as good as the local county/parish assessors and/or mapping office. Some places it is great. Some are absolutely horrific. I see it everyday.

As mentioned above, lines of occupation (change in timber stands, chamge in vegetation, etc) is a great indicator to change of possession especially if it is anywhere near an OnX line.
Posted by GCTigahs
Member since Oct 2014
2467 posts
Posted on 1/14/26 at 7:45 am to
At the WMA I hunt in MS, there’s typically a fire guard around any private land for obvious reasons. They try to burn various blocks every other yr.
Posted by Da Hammer
Folsom
Member since May 2008
5971 posts
Posted on 1/14/26 at 8:11 am to
In the marshes it will get you in a bind REAL quick lots of what it calls public is private and I’ve witnessed some nasty disagreements over it.

In the woods where I hunt in MS it’s pretty accurate but certainly not perfect.
Posted by Ol boy
Member since Oct 2018
4043 posts
Posted on 1/14/26 at 8:42 am to
quote:

In the marshes it will get you in a bind REAL quick lots of what it calls public is private and I’ve witnessed some nasty disagreements over it

Some of the disagreements are the result of people “claiming” what they think is theirs based on generational information that was intentionally or unintentionally inaccurate.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
71276 posts
Posted on 1/14/26 at 8:47 am to
quote:

In the marshes it will get you in a bind REAL quick lots of what it calls public is private


There's a lot of bullshite in those marshes too.
Posted by YbTexas
Member since Jul 2025
31 posts
Posted on 1/14/26 at 10:56 am to
Here is an image from my property. The OnX line is on top of my fence. But not sure if previous owner put the fence on the property line (he did everything else wrong).

GPS is off by 10-15’. I was standing south of the fence on this screen grab.

Posted by geauxbrown
Louisiana
Member since Oct 2006
26278 posts
Posted on 1/14/26 at 12:00 pm to
In my experiences with situations where I know where the boundary is.....10-15 feet off.
Posted by TopWaterTiger
Lake Charles, LA
Member since May 2006
12066 posts
Posted on 1/14/26 at 12:02 pm to
quote:

Land Surveyor here, as mentioned OnX is only as good as the local county/parish assessors and/or mapping office. Some places it is great. Some are absolutely horrific. I see it everyday.


This. But even the parish assessors site disclaimer states not to be used for legal purposes. It's only a rough guide. Property lines always vary.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
71276 posts
Posted on 1/14/26 at 12:09 pm to
At my house where I know exactly where the lines are its about +/- 10 feet.

Really really really good IMO. Not legal dispute good, but plenty good enough for "can I hunt here or not"
Posted by Joe_Dirte
The Boot
Member since Feb 2019
873 posts
Posted on 1/14/26 at 12:12 pm to
pretty sure it uses data from tax assessor maps. each parish/county keeps it's own database (usually hired out), but the OnX ap is only going to be as accurate as that particular parish/county is, and they aren't always super accurate. if you wanted to get nats arse, you'd have to read legal descriptions (and survey it)
Posted by Antib551
Houma, LA
Member since Dec 2018
1379 posts
Posted on 1/14/26 at 1:58 pm to
quote:

This. But even the parish assessors site disclaimer states not to be used for legal purposes. It's only a rough guide. Property lines always vary.
100 percent. The lines come from ding dongs inches assessor office drawing up legal descriptions and slapping it into/adjacent to existing tract lines.

Its purpose is to show you generally where you are at. Nothing specific.
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