We’re extending a special invitation to the top contributors of U.S OpenStreetMap data to the State of the Map San Francisco conference , along with a 50% discount. To determine the top mappers, we’ve analyzed the weekly changesets file to see who has made the most edits to U.S. map over the past 16 months.

We’d love to see these folks at the State of the Map US conference this year, and as a token of encouragement, are sending them a 50% off coupon to the conference – if you’re one of them, you’ll receive this in your inbox today. We also know that traveling to San Francisco can be expensive, so we also encourage all of these folks – and anyone in need of some extra help – to apply for a scholarship to the conference. We’re offering $500 travel stipends and free admission to all scholars, who will be selected based on the work they’re doing with OpenStreetMap and within our community. The submission deadline is just four days away on April 23, so don’t wait.

Of course, volume isn’t everything and the methodology we used to determine the most prolific mappers is incredibly coarse. If you know of a great mapper who’s not on this list but whose mapping activity we should recognize, we’d like to hear from you , and we also encourage you to recommend her or him for a scholarship .

Edits of the top 50 mappers by number of changesets in the last 18 months (click for interactive map).

Eligibility

We’ll send everyone a 50% off coupon code who falls into the top 50 mappers by number of changesets or the top 50 mappers by number of modified objects (see lists below) – OpenStreetMap US chapter board members excluded. If you’re on one of these lists but don’t hear from us by tomorrow (Saturday, 4/20), drop us a line . And thank you for all your contributions!

Top 50 mappers by Number of Changesets in U.S.

This ranking corresponds to the number of changesets a mapper has created on OpenStreetMap between January 1st 2012 and March 29th 2013 (often that’s just the number of saves). Accounts used for programmatic edits (bots) are not included.

Rank Mapper Changesets uploaded
1 mitmas 8064
2 RoadGeek_MD99 7145
3 RetiredInNH 4851
4 Mele Sax-Barnett 3995
5 ocotillo 3745
6 RJCorazza 3229
7 NE2 2921
8 coleman 2776
9 MLuna 2705
10 dchiles 2570
11 Mulad 2539
12 Sat 2535
13 andrewpmk 2274
14 Brian@Brea 2222
15 oldtopos 2173
16 zacmccormick 2163
17 nm7s9 2051
18 maxolasersquad 2049
19 Sundance 1938
20 Tom Layo 1926
21 Glassman 1918
22 Rub21 1874
23 WernerP 1798
24 25or6to4 1798
25 DavidJDBA 1779
26 techlady 1749
27 zephyr 1636
28 jumbanho 1620
29 rolandg 1612
30 SimMoonXP 1601
31 bal_agates 1571
32 nfgusedautoparts 1559
33 Paul Johnson 1525
34 jonathanpatt 1474
35 Munchabunch 1472
36 ELadner 1402
37 Minh Nguyen 1393
38 DennisL 1366
39 SD Mapman 1325
40 hpanno 1286
41 stevea 1258
42 Clorox 1239
43 Dr Kludge 1230
44 Milo 1226
45 fredjunod 1222
46 PrometheusAvV 1220
47 Dion Dock 1200
48 KindredCoda 1198
49 Umbugbene 1174
50 Eraque22 1153

Top 50 mappers by Number of Objects Modified in U.S.

This ranking corresponds to the total number of objects a mapper has modified on OpenStreetMap between January 1st 2012 and March 29th 2013. Accounts used for programmatic edits (bots) are not included here either.

Rank Mapper Objects modified
1 nmixter 2987202
2 NE2 2241520
3 jam3son 1632574
4 Your Village Maps 1595441
5 SimMoonXP 1541847
6 jumbanho 1141653
7 WernerP 1006816
8 Eureka gold 968754
9 DavidJDBA 934646
10 oldtopos 916353
11 AndrewBuck 866350
12 ELadner 853276
13 Mulad 799292
14 Mele Sax-Barnett 761891
15 ocotillo 741068
16 Umbugbene 709110
17 ELadnerImp 704629
18 asciiphil 696341
19 zephyr 664195
20 Tom Layo 583062
21 25or6to4 573725
22 Dr Kludge 562337
23 Minh Nguyen 537884
24 Sundance 518982
25 techlady 468775
26 James Michael DuPont 464976
27 DKNOTT 460628
28 emulsi 438558
29 ToeBee 427947
30 grouper 423105
31 chimani 408082
32 Nick SPW 383033
33 FrozenFlame22 382220
34 Rub21 367418
35 ingalls 358618
36 mitmas 328309
37 TorCguy 319195
38 dufekin 317719
39 vtcraghead 315846
40 RoadGeek_MD99 315509
41 stevea 314922
42 jonathanpatt 314636
43 Munchabunch 314553
44 lyx 313959
45 hpanno 297216
46 Wolfram Sobotta 296076
47 Grant Humphries 295633
48 Eraque22 290143
49 Glassman 286345
50 greggerm 283491

Does not include accounts identified as bots.

Thank you to Rub21 for processing and visualizing this data.

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