ReptilesIn Portage County, Ohio
Eastern Milksnake
Lampropeltis triangulum (Lacépède, 1789)
Eastern Milksnake in all of Ohio- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Squamata
- Family
- Colubridae
- Genus
- Lampropeltis
Near Portage County
Range
Where it is recorded
Season shown in 2 of Ohio's 88 counties. Its mapped range covers 88. Explore Ohio
- No result yet (0)
- Within its mapped range (27)
- Recorded, too few records for a result (57)
- Recorded, season not shown (2)
- Season shown (2)
Counties as a table
| County | Records | In mapped range |
|---|---|---|
| Adams County | Recorded, too few records for a result | Yes: year-round |
| Allen County | Recorded, too few records for a result | Yes: year-round |
| Ashland County | Recorded, too few records for a result | Yes: year-round |
| Ashtabula County | Recorded, too few records for a result | Yes: year-round |
| Athens County | Recorded, too few records for a result | Yes: year-round |
| Auglaize County | No qualifying records yet | Yes: year-round |
| Belmont County | Recorded, too few records for a result | Yes: year-round |
| Brown County | No qualifying records yet | Yes: year-round |
| Butler County | Recorded, too few records for a result | Yes: year-round |
| Carroll County | Recorded, too few records for a result | Yes: year-round |
| Champaign County | Recorded, too few records for a result | Yes: year-round |
| Clark County | Recorded, too few records for a result | Yes: year-round |
| Clermont County | Recorded, too few records for a result | Yes: year-round |
| Clinton County | Recorded, too few records for a result | Yes: year-round |
| Columbiana County | Recorded, too few records for a result | Yes: year-round |
| Coshocton County | Recorded, too few records for a result | Yes: year-round |
| Crawford County | Recorded, too few records for a result | Yes: year-round |
| Cuyahoga County | Recorded, too few records for a result | Yes: year-round |
| Darke County | Recorded, too few records for a result | Yes: year-round |
| Defiance County | No qualifying records yet | Yes: year-round |
| Delaware County | Recorded, too few records for a result | Yes: year-round |
| Erie County | Recorded, too few records for a result | Yes: year-round |
| Fairfield County | Recorded, too few records for a result | Yes: year-round |
| Fayette County | Recorded, too few records for a result | Yes: year-round |
| Franklin County | Recorded, too few records for a result | Yes: year-round |
| Fulton County | No qualifying records yet | Yes: year-round |
| Gallia County | No qualifying records yet | Yes: year-round |
| Geauga County | Recorded, too few records for a result | Yes: year-round |
| Greene County | Recorded, too few records for a result | Yes: year-round |
| Guernsey County | No qualifying records yet | Yes: year-round |
| Hamilton County | 26 · Recorded, season not shown | Yes: year-round |
| Hancock County | Recorded, too few records for a result | Yes: year-round |
| Hardin County | Recorded, too few records for a result | Yes: year-round |
| Harrison County | Recorded, too few records for a result | Yes: year-round |
| Henry County | No qualifying records yet | Yes: year-round |
| Highland County | Recorded, too few records for a result | Yes: year-round |
| Hocking County | Recorded, too few records for a result | Yes: year-round |
| Holmes County | Recorded, too few records for a result | Yes: year-round |
| Huron County | No qualifying records yet | Yes: year-round |
| Jackson County | No qualifying records yet | Yes: year-round |
| Jefferson County | Recorded, too few records for a result | Yes: year-round |
| Knox County | Recorded, too few records for a result | Yes: year-round |
| Lake County | Recorded, too few records for a result | Yes: year-round |
| Lawrence County | Recorded, too few records for a result | Yes: year-round |
| Licking County | Recorded, too few records for a result | Yes: year-round |
| Logan County | Recorded, too few records for a result | Yes: year-round |
| Lorain County | Recorded, too few records for a result | Yes: year-round |
| Lucas County | Recorded, too few records for a result | Yes: year-round |
| Madison County | No qualifying records yet | Yes: year-round |
| Mahoning County | Recorded, too few records for a result | Yes: year-round |
| Marion County | Recorded, too few records for a result | Yes: year-round |
| Medina County | 22 · Season shown | Yes: year-round |
| Meigs County | No qualifying records yet | Yes: year-round |
| Mercer County | No qualifying records yet | Yes: year-round |
| Miami County | No qualifying records yet | Yes: year-round |
| Monroe County | Recorded, too few records for a result | Yes: year-round |
| Montgomery County | Recorded, too few records for a result | Yes: year-round |
| Morgan County | Recorded, too few records for a result | Yes: year-round |
| Morrow County | Recorded, too few records for a result | Yes: year-round |
| Muskingum County | Recorded, too few records for a result | Yes: year-round |
| Noble County | No qualifying records yet | Yes: year-round |
| Ottawa County | No qualifying records yet | Yes: year-round |
| Paulding County | No qualifying records yet | Yes: year-round |
| Perry County | No qualifying records yet | Yes: year-round |
| Pickaway County | No qualifying records yet | Yes: year-round |
| Pike County | Recorded, too few records for a result | Yes: year-round |
| Portage County | 31 · Recorded, season not shown | Yes: year-round |
| Preble County | Recorded, too few records for a result | Yes: year-round |
| Putnam County | No qualifying records yet | Yes: year-round |
| Richland County | Recorded, too few records for a result | Yes: year-round |
| Ross County | Recorded, too few records for a result | Yes: year-round |
| Sandusky County | No qualifying records yet | Yes: year-round |
| Scioto County | Recorded, too few records for a result | Yes: year-round |
| Seneca County | No qualifying records yet | Yes: year-round |
| Shelby County | No qualifying records yet | Yes: year-round |
| Stark County | Recorded, too few records for a result | Yes: year-round |
| Summit County | 157 · Season shown | Yes: year-round |
| Trumbull County | Recorded, too few records for a result | Yes: year-round |
| Tuscarawas County | Recorded, too few records for a result | Yes: year-round |
| Union County | No qualifying records yet | Yes: year-round |
| Van Wert County | No qualifying records yet | Yes: year-round |
| Vinton County | Recorded, too few records for a result | Yes: year-round |
| Warren County | Recorded, too few records for a result | Yes: year-round |
| Washington County | Recorded, too few records for a result | Yes: year-round |
| Wayne County | Recorded, too few records for a result | Yes: year-round |
| Williams County | No qualifying records yet | Yes: year-round |
| Wood County | No qualifying records yet | Yes: year-round |
| Wyandot County | No qualifying records yet | Yes: year-round |
Season
When it is recorded
In Portage County
Not enough evidence
The weeks are still too uncertain to show a season. Based on 31 records in 7 of the 10 years from 2016 to 2025, above the minimum of 20 records from 5 different years.
Show over the bars
Records per week from 31 records in 7 of the 10 years from 2016 to 2025. Shows when people recorded it, not a season or how common it is.
Show as a table
| Week | Records of Eastern Milksnake | Years recorded | Records of all species |
|---|---|---|---|
| Jan 4–10 | 1 | 1 | 44 |
| Jan 11–17 | 0 | 0 | 56 |
| Jan 18–24 | 0 | 0 | 31 |
| Jan 25–31 | 0 | 0 | 67 |
| Feb 1–7 | 0 | 0 | 66 |
| Feb 8–14 | 0 | 0 | 74 |
| Feb 15–21 | 0 | 0 | 72 |
| Feb 22–28 | 0 | 0 | 80 |
| Mar 1–7 | 0 | 0 | 109 |
| Mar 8–14 | 0 | 0 | 146 |
| Mar 15–21 | 0 | 0 | 152 |
| Mar 22–28 | 1 | 1 | 140 |
| Mar 29 – Apr 4 | 0 | 0 | 277 |
| Apr 5–11 | 1 | 1 | 451 |
| Apr 12–18 | 1 | 1 | 648 |
| Apr 19–25 | 1 | 1 | 641 |
| Apr 26 – May 2 | 0 | 0 | 849 |
| May 3–9 | 0 | 0 | 1,174 |
| May 10–16 | 0 | 0 | 788 |
| May 17–23 | 5 | 3 | 1,091 |
| May 24–30 | 4 | 3 | 753 |
| May 31 – Jun 6 | 1 | 1 | 782 |
| Jun 7–13 | 3 | 3 | 1,242 |
| Jun 14–20 | 2 | 2 | 1,568 |
| Jun 21–27 | 0 | 0 | 1,383 |
| Jun 28 – Jul 4 | 1 | 1 | 1,344 |
| Jul 5–11 | 1 | 1 | 1,357 |
| Jul 12–18 | 1 | 1 | 1,310 |
| Jul 19–25 | 1 | 1 | 1,431 |
| Jul 26 – Aug 1 | 2 | 2 | 1,439 |
| Aug 2–8 | 0 | 0 | 1,037 |
| Aug 9–15 | 0 | 0 | 1,056 |
| Aug 16–22 | 0 | 0 | 1,145 |
| Aug 23–29 | 0 | 0 | 911 |
| Aug 30 – Sep 5 | 0 | 0 | 930 |
| Sep 6–12 | 4 | 2 | 986 |
| Sep 13–19 | 0 | 0 | 974 |
| Sep 20–26 | 0 | 0 | 1,199 |
| Sep 27 – Oct 3 | 0 | 0 | 985 |
| Oct 4–10 | 0 | 0 | 516 |
| Oct 11–17 | 0 | 0 | 417 |
| Oct 18–24 | 1 | 1 | 435 |
| Oct 25–31 | 0 | 0 | 401 |
| Nov 1–7 | 0 | 0 | 278 |
| Nov 8–14 | 0 | 0 | 251 |
| Nov 15–21 | 0 | 0 | 228 |
| Nov 22–28 | 0 | 0 | 130 |
| Nov 29 – Dec 5 | 0 | 0 | 82 |
| Dec 6–12 | 0 | 0 | 79 |
| Dec 13–19 | 0 | 0 | 69 |
| Dec 20–26 | 0 | 0 | 53 |
| Dec 27 – Jan 2 | 0 | 0 | 77 |
In Ohio
Late April to late September, middle week Jun 21–27
Middle week · Jun 21–27
This week · Nov 8–14
Show over the bars
Records per week from 922 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.
Recorded on 569 dates. Latest record: October 2025.
Show as a table
| Week | Records of Eastern Milksnake | Years recorded | Records of all species |
|---|---|---|---|
| Jan 4–10 | 1 | 1 | 6,211 |
| Jan 11–17 | 1 | 1 | 5,146 |
| Jan 18–24 | 0 | 0 | 4,645 |
| Jan 25–31 | 0 | 0 | 4,698 |
| Feb 1–7 | 0 | 0 | 6,023 |
| Feb 8–14 | 1 | 1 | 5,888 |
| Feb 15–21 | 1 | 1 | 5,436 |
| Feb 22–28 | 0 | 0 | 6,846 |
| Mar 1–7 | 0 | 0 | 8,321 |
| Mar 8–14 | 1 | 1 | 10,384 |
| Mar 15–21 | 1 | 1 | 12,620 |
| Mar 22–28 | 2 | 2 | 13,949 |
| Mar 29 – Apr 4 | 1 | 1 | 19,661 |
| Apr 5–11 | 4 | 3 | 26,860 |
| Apr 12–18 | 7 | 4 | 39,925 |
| Apr 19–25 | 9 | 4 | 41,623 |
| Apr 26 – May 2 | 30 | 7 | 56,391 |
| May 3–9 | 18 | 6 | 52,952 |
| May 10–16 | 47 | 8 | 53,785 |
| May 17–23 | 67 | 10 | 57,698 |
| May 24–30 | 69 | 8 | 54,651 |
| May 31 – Jun 6 | 69 | 10 | 53,099 |
| Jun 7–13 | 66 | 9 | 53,700 |
| Jun 14–20 | 45 | 9 | 56,625 |
| Jun 21–27 | 39 | 9 | 55,361 |
| Jun 28 – Jul 4 | 42 | 10 | 58,477 |
| Jul 5–11 | 31 | 9 | 61,336 |
| Jul 12–18 | 21 | 8 | 64,722 |
| Jul 19–25 | 31 | 9 | 69,753 |
| Jul 26 – Aug 1 | 28 | 9 | 59,416 |
| Aug 2–8 | 21 | 7 | 59,712 |
| Aug 9–15 | 34 | 8 | 55,994 |
| Aug 16–22 | 30 | 8 | 54,328 |
| Aug 23–29 | 28 | 10 | 51,772 |
| Aug 30 – Sep 5 | 26 | 8 | 57,167 |
| Sep 6–12 | 34 | 6 | 59,075 |
| Sep 13–19 | 37 | 8 | 54,543 |
| Sep 20–26 | 20 | 8 | 45,860 |
| Sep 27 – Oct 3 | 16 | 7 | 43,180 |
| Oct 4–10 | 18 | 8 | 37,841 |
| Oct 11–17 | 17 | 7 | 30,824 |
| Oct 18–24 | 4 | 4 | 21,156 |
| Oct 25–31 | 1 | 1 | 19,021 |
| Nov 1–7 | 1 | 1 | 14,172 |
| Nov 8–14 | 2 | 2 | 12,621 |
| Nov 15–21 | 0 | 0 | 7,965 |
| Nov 22–28 | 0 | 0 | 8,136 |
| Nov 29 – Dec 5 | 0 | 0 | 6,083 |
| Dec 6–12 | 1 | 1 | 6,004 |
| Dec 13–19 | 0 | 0 | 5,423 |
| Dec 20–26 | 0 | 0 | 5,661 |
| Dec 27 – Jan 2 | 0 | 0 | 8,459 |
What these results show
These results show when people recorded a species, not when or where it occurs. Missing weeks and low counts do not mean absence or scarcity, and counts are not abundance. Contributed records reflect where, when and what people chose to observe.
Identification
How to identify it
Look-alikes
Land cover
Often confused with
- Central Ratsnake Pantherophis alleghaniensisOften confused in Ohio: 45 identifications in Ohio named one where the other was meant
- Common Watersnake Nerodia sipedonOften confused in Ohio: 35 identifications in Ohio named one where the other was meant
- Eastern Foxsnake Pantherophis vulpinusOften confused in Ohio: 10 identifications in Ohio named one where the other was meant
- North American Racer Coluber constrictor47 identifications worldwide named one where the other was meant
- Eastern Hognose Snake Heterodon platirhinos29 identifications worldwide named one where the other was meant
From iNaturalist’s similar-species counts, refreshed monthly: confusions in Ohio first, then worldwide. Only species with an Ohio result are listed.
Land cover where it is recorded
| Land cover | Its recordsAll Ohio records |
|---|---|
| Developed | 39%49% |
| Forest | 32%31% |
| Farmland | 23%11% |
| Wetland | 6%5% |
| Barren | 0.6%0.6% |
| Open water | 0.2%3% |
From 467 records placed within 100 m, beside all Ohio records placed the same way. People record where they go, so this shows where records come from, not where the species lives. Land cover: USGS Annual NLCD, 2025 (opens in a new tab)
Sources
Where these results come from
- Records from iNaturalist research-grade observations and expert-identified GBIF datasets, CC0, CC BY and CC BY-NC. Sources
- Seasons use the published method and its evidence thresholds. Methods
- See it on iNaturalist (opens in a new tab)OpenPhenology is independent and not affiliated with iNaturalist.
Records behind the Ohio result
922 records from 2 datasets.
- iNaturalist Research-grade Observations (opens in a new tab) · iNaturalist.org · 912 recordsiNaturalist contributors, iNaturalist (2026). iNaturalist Research-grade Observations. iNaturalist.org. Occurrence dataset https://doi.org/10.15468/ab3s5x accessed via GBIF.org on 2026-11-13.
- iNaturalist observations (opens in a new tab) · iNaturalist.org · 10 recordsiNaturalist. Available from https://www.inaturalist.org. Accessed 2026-11-13
To cite: the GBIF download doi:10.15468/dl.y2jkt8 (opens in a new tab).
A spreadsheet (CSV) with a link to each record, on iNaturalist or GBIF. Records whose location was hidden by the observer or the source are counted but not linked.