USCF player statistics

Folk, Kimberly

USCF 33122607CaliforniaUpdated: Nov 2026
Official US Chess record

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Gender
Female
US Chess reported rank
#42,822
Floor
Regular 148 · Quick 148
Rated games
Regular 16 · Quick 16

US Chess record as of Sep 18, 2026

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Rating format

Regular rating

634

Published rating · Nov 2026 · 5 published updates since Jul 2026

Nov 2026634 Regular
Jul 2026: 670 provisionalAug 2026: 664 provisionalSep 2026: 640 provisionalOct 2026: 660 provisionalNov 2026: 634
Jun 2026Nov 2026
6 updates in this window · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity
Overlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

  • -10 Quick vs Regular

    Typical for 600–699 regular players: -4 (middle half -16 to +11, 2,305 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+20
Sep 2026 to Oct 2026
Biggest drop
-26
Oct 2026 to Nov 2026
Longest rise
1 update
+20 from Sep 2026 to Oct 2026
Updates that moved
4 of 4
Latest -26, Oct 2026 to Nov 2026
Typical move
±19
Mean absolute change; spread ±21.3

Regular rating in context

Nov 2026 update

United States

#51,720of 83,032 rated members · higher than 37.6%

31,268 lower · 45 same rating · 51,719 higher · ties share a rank

California

#6,046of 9,288 rated members · higher than 34.8%

3,235 lower · 8 same rating · 6,045 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 10,113 within 100 points of 634 (this player included)

Player · 634
01,4252,850

600–649: 2,591 members (3.1%) · highlighted band is the player’s · dashed line is the target

38.6% below 650 (32,088 of 83,032; 37.6% below 634)

Percentile over time · United States

37.6% higher than · Nov 2026 · rank #51,720 of 83,032

Since Jul 2026
-3 pts

Jul 2026: higher than 40.6% (rank 49,036 of 82,736)Aug 2026: higher than 40.2% (rank 49,581 of 83,080)Sep 2026: higher than 38.6% (rank 51,262 of 83,635)Oct 2026: higher than 39.4% (rank 49,979 of 82,596)Nov 2026: higher than 37.6% (rank 51,720 of 83,032)
Jul 2026Nov 2026
Each month against that month’s active pool, so pool growth and rating drift both count.
How these comparisons are calculated

Chess67 calculations from the Nov 2026 monthly rating update, using the same population as the USCF statistics pages: US members classified as active in the published monthly records, excluding lifetime-coded records, provisional ratings included. Ties share a rank; “lower” is strictly lower; national and state groups overlap. The target explorer keeps the population fixed, with this player at their recorded rating: it is a rating comparison, not a prediction of future rank.

United States statistics California statistics

Published ratings by month

P marks a provisional rating; the small figure is the change since the previous published observation.

Monthly USCF ratings for Folk, Kimberly
MonthRegularQuick
Nov 2026634-26624-26
Oct 2026660 P+20 · 21 games650 P+19 · 21 games
Sep 2026640 P-24 · 16 games631 P-30 · 16 games
Aug 2026664 P-6 · 13 games661 P-25 · 13 games
Jul 2026670 P6 games686 P6 games
Jun 2026——
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About these statistics. Built from the monthly USCF rating updates available to Chess67. Ratings change between publications, and a missing month is not inactivity. The official US Chess record has current ratings and tournament history.